Jack Dorsey has launched Bitchat, a decentralized, peer-to-peer messaging app that uses Bluetooth mesh networks for encrypted, ephemeral chats without requiring accounts, servers, or internet access. The beta version is live on TestFlight, with a full white paper available on GitHub. CNBC reports: In a post on X Sunday, Dorsey called it a personal experiment in "bluetooth mesh networks, relays and store and forward models, message encryption models, and a few other things." Bitchat enables ephemeral, encrypted communication between nearby devices. As users move through physical space, their phones form local Bluetooth clusters and pass messages from device to device, allowing them to reach peers beyond standard range -- even without Wi-Fi or cell service. Certain "bridge" devices connect overlapping clusters, expanding the mesh across greater distances. Messages are stored only on device, disappear by default and never touch centralized infrastructure -- echoing Dorsey's long-running push for privacy-preserving, censorship-resistant communication. Like the Bluetooth-based apps used during Hong Kong's 2019 protests, Bitchat is designed to keep working even when the internet is blocked, offering a censorship-resistant way to stay connected during outages, shutdowns or surveillance. The app also supports optional group chats, or "rooms," which can be named with hashtags and protected by passwords. It includes store and forward functionality to deliver messages to users who are temporarily offline. A future update will add WiFi Direct to increase speed and range, pushing Dorsey's vision for off-grid, user-owned communication even further.

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An anonymous reader quotes a report from Ars Technica: Epic Games, buoyed by the massive success of Fortnite, has spent the last few years throwing elbows in the mobile industry to get its app store on more phones. It scored an antitrust win against Google in late 2023, and the following year it went after Samsung for deploying "Auto Blocker" on its Android phones, which would make it harder for users to install the Epic Games Store. Now, the parties have settled the case just days before Samsung will unveil its latest phones. The Epic Store drama began several years ago when the company defied Google and Apple rules about accepting outside payments in the mega-popular Fortnite. Both stores pulled the app, and Epic sued. Apple emerged victorious, with Fortnite only returning to the iPhone recently. Google, however, lost the case after Epic showed it worked behind the scenes to stymie the development of app stores like Epic's. Google is still working to avoid penalties in that long-running case, but Epic thought it smelled a conspiracy last year. It filed a similar lawsuit against Samsung, accusing it of implementing a feature to block third-party app stores. The issue comes down to the addition of a feature to Samsung phones called Auto Blocker, which is similar to Google's new Advanced Protection in Android 16. It protects against attacks over USB, disables link previews, and scans apps more often for malicious activity. Most importantly, it blocks app sideloading. Without sideloading, there's no way to install the Epic Games Store or any of the content inside it. Auto Blocker is enabled by default on Samsung phones, but users can opt out during setup. Epic claimed in its suit that the sudden inclusion of this feature was a sign that Google was working with Samsung to stand in the way of alternative app stores again. Epic has apparently gotten what it wanted from Samsung -- CEO Tim Sweeney has announced that Epic is dropping the case in light of a new settlement. Sweeney said Samsung "will address Epic's concerns," without elaborating on the details. Samsung may stop making Auto Blocker the default or create a whitelist of apps, like the Epic Games Store, that can bypass Auto Blocker. Another possibility is that Epic and select third-party stores are granted special access while Auto Blocker remains on for others, balancing security and openness. A "more interesting outcome," according to Ars, would be for Samsung to pre-install the Epic Games Store on its new phones.

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Nintendo plans to maintain its "traditional approach" to game development while managing rising costs during the Switch 2 transition, company president Shuntaro Furukawa said during a recent shareholders meeting. "Recent game software development has become larger in scale and longer in duration, resulting in higher development costs," he said, adding that "rising development costs are increasing that risk" in what has always been "a high-risk business." Nintendo's development teams are "currently devising various ways to maintain our traditional approach to creating games amidst the increasing scale and length of development," Furukawa said. The company believes, he said, "it is important to make the necessary investments for more efficient development." The early Switch 2 lineup reflects increased ambition, with Mario Kart World introducing open-world structure to the racing series and Donkey Kong Bananza adding destructive elements to 3D platforming. Mario Kart World sells for $79.99, $10 more than most Nintendo games, while the Switch 2 costs $449.99, a $100 increase over the Switch OLED.

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An anonymous reader shares a report: Delhi's government has been forced to reverse a controversial plan to effectively ban older vehicles from city roads after public backlash and concerns over how the policy would be implemented. The plan would have seen "end of life vehicles" -- petrol cars over 15 years old and diesel vehicles over 10 -- denied fuel at petrol stations using automatic number plate recognition cameras, or ANPR, and, potentially, impounded on the spot. The policy was set to come into effect this week but state environment minister Manjinder Singh Sirsa said last week the government would halt the plan following widespread complaints. Mr Sirsa said the administration would not allow vehicles to be seized and cited "technological integration challenges" and a lack of coordination with neighbouring states sharing traffic with the capital.

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Leaders of the BRICS group of developing nations addressed the shared challenges of global warming on Monday, the final day of their summit in Rio de Janeiro, demanding that wealthy nations fund mitigation of greenhouse gas emissions in poorer nations. From a report: In his opening remarks, Brazilian President Luiz Inacio Lula da Silva, who will host the United Nations climate summit in November, also blasted denialism of the climate emergency, indirectly criticizing U.S. President Donald Trump's decision to pull his country out of the 2015 Paris Agreement. "Today, denialism and unilateralism are eroding past achievements and harming our future," he said. "The Global South is in a position to lead a new development paradigm without repeating the mistakes of the past." Trump took issue on Sunday with veiled criticism from the BRICS group, accusing the bloc of having "anti-American policies" and threatening them with extra 10% tariffs.

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alternative_right writes: A study by Anthropic researchers on how human feedback can encourage sycophantic behavior showed that AI assistants will sometimes modify accurate answers when questioned by the user -- and ultimately give an inaccurate response.

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Apple displayed a full-screen ad for "F1 The Movie" in its TV app that linked directly to a web browser for ticket purchases without showing warning screens that the company requires other developers to include when directing users outside their apps. The "Buy Tickets" button sent users to the F1 movie website in their default browser without confirmation dialogs or interstitial warnings. Apple mandates that third-party developers show scare sheets when linking out of apps to sell digital content, but considers movie tickets a "real-world experience" exempt from its In-App Purchase system. Further reading: iPhone Customers Upset By Apple Wallet Ad Pushing F1 Movie.

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An anonymous reader shares a report: Netflix doubled down on its global anime strategy over the weekend, unveiling a slate of new titles and fresh footage during its showcase at Anime Expo in Los Angeles. The company also shared updated viewership data highlighting just how far Japanese anime has come in expanding from its former niche into a powerhouse global content category. According to Netflix, more than 50 percent of its members -- amounting to over 150 million households, or an estimated 300 million viewers -- now watch anime. The company says anime viewership on the platform has tripled over the past five years, with 2024 marking a record-breaking year: 33 anime titles appeared in Netflix's Global Top 10 (Non-English) rankings, more than double the number in 2021.

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An anonymous reader shares a report: OpenAI said it has no active plans to use Google's in-house chip to power its products, two days after Reuters and other news outlets reported on the AI lab's move to turn to its competitor's artificial intelligence chips to meet growing demand. A spokesperson for OpenAI said on Sunday that while the AI lab is in early testing with some of Google's tensor processing units (TPUs), it has no plans to deploy them at scale right now.

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Google DeepMind's chief business officer says Alphabet's drug-discovery company Isomorphic Labs "is preparing to launch human trials of AI-designed drugs," according to a report in Fortune, "pairing cutting-edge AI with pharma veterans to design medicines faster, cheaper, and more accurately." "There are people sitting in our office in King's Cross, London, working, and collaborating with AI to design drugs for cancer," said Colin Murdoch [DeepMind's chief business officer and president of Isomorphic Labs]. "That's happening right now." After years in development, Murdoch says human clinical trials for Isomorphic's AI-assisted drugs are finally in sight. "The next big milestone is actually going out to clinical trials, starting to put these things into human beings," he said. "We're staffing up now. We're getting very close." The company, which was spun out of DeepMind in 2021, was born from one of DeepMind's most celebrated breakthroughs, AlphaFold, an AI system capable of predicting protein structures with a high level of accuracy. Interactions of AlphaFold progressed from being able to accurately predict individual protein structures to modeling how proteins interact with other molecules like DNA and drugs. These leaps made it far more useful for drug discovery, helping researchers design medicines faster and more precisely, turning the tool into a launchpad for a much larger ambition... In 2024, the same year it released AlphaFold 3, Isomorphic signed major research collaborations with pharma companies Novartis and Eli Lilly. A year later, in April 2025, Isomorphic Labs raised $600 million in its first-ever external funding round, led by Thrive Capital. The deals are part of Isomorphic's plan to build a "world-class drug design engine..." Today, pharma companies often spend millions attempting to bring a single drug to market, sometimes with just a 10% chance of success once trials begin. Murdoch believes Isomorphic's tech could radically improve those odds. "We're trying to do all these things: speed them up, reduce the cost, but also really improve the chance that we can be successful," he says. He wants to harness AlphaFold's technology to get to a point where researchers have 100% conviction that the drugs they are developing are going to work in human trials. "One day we hope to be able to say — well, here's a disease, and then click a button and out pops the design for a drug to address that disease," Murdoch said. "All powered by these amazing AI tools."

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"The China Film Foundation, a nonprofit fund under the Chinese government, plans to use AI to revitalize 100 kung fu classics including Police Story, Once Upon a Time in China and Fist of Fury, featuring Jackie Chan, Jet Li and Bruce Lee, respectively," reports the Los Angeles Times. "The foundation said it will partner with businesses including Shanghai Canxing Culture & Media Co., which will license 100 Hong Kong films to AI companies to reintroduce those movies to younger audiences globally." The foundation said there are opportunities to use AI to tell those stories through animation, for example. There are plans to release an animated version of director John Woo's 1986 film A Better Tomorrow that uses AI to "reinterpret" Woo's "signature visual language," according to an English transcript of the announcement.... The project raised eyebrows among U.S. artists, many of whom are deeply wary of the use of AI in creative pursuits. The Directors Guild of America said AI is a creative tool that should only be used to enhance the creative storytelling process and "it should never be used retroactively to distort or destroy a filmmaker's artistic work... The DGA strongly opposes the use of AI or any other technology to mutilate a film or to alter a director's vision," the DGA said in a statement. "The Guild has a longstanding history of opposing such alterations on issues like colorization or sanitization of films to eliminate so-called 'objectionable content', or other changes that fundamentally alter a film's original style, meaning, and substance." The project highlights widely divergent views on AI's potential to reshape entertainment as the two countries compete for dominance in the highly competitive AI space.... During the project's announcement, supporters touted the opportunity AI will bring to China to further its cultural message globally and generate new work for creatives. At the same time, they touted AI's disruption of the filmmaking process, saying the A Better Tomorrow remake was completed with just 30 people, significantly fewer than a typical animated project. China is a "more brutal society in that sense," said Eric Harwit, professor of Asian studies at the University of Hawaii at Manoa. "If somebody loses their job because artificial intelligence is taking over, well, that's just the cost of China's moving forward.... You don't have those freestanding labor organizations, so they don't have that kind of clout to protest against the Chinese using artificial intelligence in a way that might reduce their job opportunities or lead to layoffs in the sector..." The kung fu revitalization efforts will extend into other areas, including the creation of a martial arts video game. The article also includes an interesting statistic. "Many people in China embrace AI, with 83% feeling confident that AI systems are designed to act in the best interest of society, much higher than the U.S. where it's 37%, according to a survey from the United Nations Development Program."

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"A growing group of young, college-educated Americans are struggling to find work," reports the Minnesota Star Tribune, "as the unemployment rate for recent graduates outpaces overall unemployment for the first time in decades." While the national unemployment rate has hovered around 4% for months, the rate for 20-something degree holders is nearly 6%, data from the Federal Reserve Bank of New York shows. [And for young workers (ages 22 to 27) without a degree it's 6.9%.] The amount of time young workers report being unemployed is also on the rise. Economists attribute some of the shift to normal post-pandemic cooling of labor market, which is making it harder for job-seekers of all ages to land a gig. But there's also widespread economic uncertainty causing employers to pull back on hiring and signs AI could replace entry-level positions.... Business schools nationwide were among the first to see the labor market shift in early 2023 as tech industry cuts bled into other sectors, said Maggie Tomas, Business Career Center executive director at Carlson. Tariffs and stock market volatility have only added to the uncertainty, she said. In 2022, when workers had their pick of jobs, 98% of full-time Carlson MBA graduates had a job offer in a field related to their degree within three months of graduation, according to the school. That number, which Tomas said is usually 90% or higher, dropped to 89% in 2023 and 83% in 2024. Part of the challenge, she said, is recent graduates are now competing with more experienced workers who are re-entering the market amid layoffs and hiring freezes... After doing a lot of hiring in 2021 and 2022, Securian Financial in St. Paul is prioritizing internal hires, said Human Resources Director Leah Henrikson. Many entry-level roles have gone to current employees looking for a change, she said. "We are still looking externally, it's just the folks that we are looking for externally tend ... to fulfill a specific skill gap we may have at that moment in time," Henrikson said.

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Investigators of a deadly Boeing 787 crash "are studying possible dual engine failure as a scenario that prevented the Boeing Co. 787 jet from staying airborne," reports Bloomberg: Pilots from the airline reenacted the doomed aircraft's parameters in a flight simulator, including with the landing gear deployed and the wing flaps retracted, and found those settings alone didn't cause a crash, according to people familiar with the investigation. [Also, analysis of the wreckage "suggests the wing flaps and slats, which help an aircraft increase lift during takeoff, were extended correctly."] The result, alongside the previous discovery that an emergency-power turbine deployed seconds before impact, has reinforced the focus on a technical failure as one possible cause, said the people, who asked not to be identified discussing nonpublic deliberations... [The turbine deploys "in the case of electrical failure," the article points out, and "was activated before the plane crashed, according to previous findings. That fan helps provide the aircraft with vital power, though it's far too small to generate any lift."] Pilots who reviewed the footage have pointed to the fact that the landing gear was already partially tilted forward, suggesting the cockpit crew had initiated the retraction sequence of the wheels. At the same time, the landing-gear doors had not opened, which pilots say might mean that the aircraft experienced a loss of power or a hydraulic failure — again pointing to possible issues with the engines that provide the aircraft's electricity.

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"California residents who lit illegal fireworks over the July 4 holiday may be in for a nasty surprise in the mail thanks to covert fire department operations," reports SFGate. "A number of California cities, including Sacramento, have begun using drones to locate people shooting off illegal fireworks." From Wednesday to Saturday night, the Sacramento Fire Department's special fireworks task force patrolled the streets with unmarked cars and drones, focusing on neighborhoods where they've had prior complaints. Task force officers and the drones took photos of the illegal activity, and within 30 days the property owner where the fireworks were used could receive a fine in the mail... This year, Sacramento upped the fine to $1,000 for the first firework, $2,500 for the second and $5,000 per firework after that. If you lit a firework on city property, such as a park or a school, the fine goes up to $10,000 each. There's no limit to how many fines you can be issued... This year, a number of cities across the state announced they would be using drones to find scofflaws, among them Indio, Riverside, Hemet, Brea and towns in Tulare County... Fox40 reported on Saturday that around 60 citations were being prepared in Sacramento, with more likely on the way as fire officials review surveillance footage. Last year for illegal fireworks, one Sacramento-area resident received a $100,000 fine.

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China "is pouring money into building an AI supply chain with as little reliance on the U.S. as possible," reports the Wall Street Journal. And now Chinese AI companies "are loosening the U.S.'s global stranglehold on AI," reports the Wall Street Journal, "challenging American superiority and setting the stage for a global arms race in the technology." In Europe, the Middle East, Africa and Asia, users ranging from multinational banks to public universities are turning to large language models from Chinese companies such as startup DeepSeek and e-commerce giant Alibaba as alternatives to American offerings such as ChatGPT... Saudi Aramco, the world's largest oil company, recently installed DeepSeek in its main data center. Even major American cloud service providers such as Amazon Web Services, Microsoft and Google offer DeepSeek to customers, despite the White House banning use of the company's app on some government devices over data-security concerns. OpenAI's ChatGPT remains the world's predominant AI consumer chatbot, with 910 million global downloads compared with DeepSeek's 125 million, figures from researcher Sensor Tower show. American AI is widely seen as the industry's gold standard, thanks to advantages in computing semiconductors, cutting-edge research and access to financial capital. But as in many other industries, Chinese companies have started to snatch customers by offering performance that is nearly as good at vastly lower prices. A study of global competitiveness in critical technologies released in early June by researchers at Harvard University found China has advantages in two key building blocks of AI, data and human capital, that are helping it keep pace... Leading Chinese AI companies — which include Tencent and Baidu — further benefit from releasing their AI models open-source, meaning users are free to tweak them for their own purposes. That encourages developers and companies globally to adopt them. Analysts say it could also pressure U.S. rivals such as OpenAI and Anthropic to justify keeping their models private and the premiums they charge for their service... On Latenode, a Cyprus-based platform that helps global businesses build custom AI tools for tasks including creating social-media and marketing content, as many as one in five users globally now opt for DeepSeek's model, according to co-founder Oleg Zankov. "DeepSeek is overall the same quality but 17 times cheaper," Zankov said, which makes it particularly appealing for clients in places such as Chile and Brazil, where money and computing power aren't as plentiful... The less dominant American AI companies are, the less power the U.S. will have to set global standards for how the technology should be used, industry analysts say. That opens the door for Beijing to use Chinese models as a Trojan horse for disseminating information that reflects its preferred view of the world, some warn.... The U.S. also risks losing insight into China's ambitions and AI innovations, according to Ritwik Gupta, AI policy fellow at the University of California, Berkeley. "If they are dependent on the global ecosystem, then we can govern it," said Gupta. "If not, China is going to do what it is going to do, and we won't have visibility." The article also warns of other potential issues: "Further down the line, a breakdown in U.S.-China cooperation on safety and security could cripple the world's capacity to fight future military and societal threats from unrestrained AI." "The fracturing of global AI is already costing Western makers of computer chips and other hardware billions in lost sales... Adoption of Chinese models globally could also mean lost market share and earnings for AI-related U.S. firms such as Google and Meta."

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The Free Software Foundation's services face "ongoing (and increasing) distributed denial of service (DDoS) attacks," senior systems administrator Ian Kelling wrote Wednesday. But "Even though we are under active attack, gnu.org, ftp.gnu.org, and savannah.gnu.org are up with normal response times at the moment, and have been for the majority of this week, largely thanks to hard work from the Savannah hackers Bob, Corwin, and Luke who've helped us, your sysadmins." "We've shielded these sites for almost a full year of intense attacks now, and we'll keep on fighting these attacks for as long as they continue." Our infrastructure has been under attack since August 2024. Large Language Model (LLM) web crawlers have been a significant source of the attacks, and as for the rest, we don't expect to ever know what kind of entity is targeting our sites or why. - In the fall Bulletin, we wrote about the August attack on gnu.org. That attack continues, but we have mitigated it. Judging from the pattern and scope, the goal was likely to take the site down and it was not an LLM crawler. We do not know who or what is behind the attack, but since then, we have had more attacks with even higher severity. - To begin with, GNU Savannah, the FSF's collaborative software development system, was hit by a massive botnet controlling about five million IPs starting in January. As of this writing, the attack is still ongoing, but the botnet's current iteration is mitigated. The goal is likely to build an LLM training dataset. We do not know who or what is behind this. - Furthermore, gnu.org and ftp.gnu.org were targets in a new DDoS attack starting on May 27, 2025. Its goal seems to be to take the site down. It is currently mitigated. It has had several iterations, and each has caused some hours of downtime while we figured out how to defend ourselves against it. Here again, the goal was likely to take our sites down and we do not know who or what is behind this. - In addition, directory.fsf.org, the server behind the Free Software Directory, has been under attack since June 18. This likely is an LLM scraper designed to specifically target Media Wiki sites with a botnet. This attack is very active and now partially mitigated... Even though we are under active attack, gnu.org, ftp.gnu.org, and savannah.gnu.org are up with normal response times at the moment, and have been for the majority of this week, largely thanks to hard work from the Savannah hackers Bob, Corwin, and Luke who've helped us, your sysadmins. We've shielded these sites for almost a full year of intense attacks now, and we'll keep on fighting these attacks for as long as they continue. The full-time FSF tech staff is just two systems administrators, "and we currently lack the funds to hire more tech staff any time soon," Kelling points out. Kelling titled his post "our small team vs millions of bots," suggesting that supporters purchase FSF memberships "to improve our staffing situation... Can you join us in our crucial work to guard user freedom and defy dystopia?" Kelling also points out they're also facing "run-of-the-mill standard crawlers, SEO crawlers, crawlers pretending to be normal users, crawlers pretending to be other crawlers, uptime systems, vulnerability scanners, carrier-grade network address translation, VPNs, and normal browsers hitting our sites..." "Some of the abuse is not unique to us, and it seems that the health of the web has some serious problems right now."

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Three space probes are leaving our solar system — yet are still functioning. After the two Voyager space probes, New Horizons "was launched in 2006, initially to study Pluto," remembers New Scientist. But "it has since travelled way beyond this point, ploughing on through the Kuiper belt, a vast, wide band of rocks and dust billions of miles from the sun. It is now speeding at tens of thousands of kilometres per hour..." And it's just performed the first ever example of interstellar navigation... As it hurtles out of our solar system, NASA's New Horizons spacecraft is so far from Earth that the stars in the Milky Way appear in markedly different positions compared with our own view... due to the parallax effect. This was demonstrated in 2020 when the probe beamed back pictures of two nearby stars, Proxima Centauri and Wolf 359, to Earth. Now, Tod Lauer at the US National Optical-Infrared Astronomy Research Laboratory in Arizona and his colleagues have used this effect to work out the position of New Horizons... Almost all spacecraft calculate their bearings to within tens of metres using NASA's Deep Space Network, a collection of radio transmitters on Earth that send regular signals out to space. In comparison, the parallax method was far less accurate, locating New Horizons within a sphere with a radius of 60 million kilometres, about half the distance between Earth and the sun. "We're not going to put the Deep Space Network out of business — this is only a demo proof of concept," says Lauer. However, with a better camera and equipment they could improve the accuracy by up to 100 times, he says. Using this technique for interstellar navigation could offer advantages over the DSN because it could give more accurate location readings as a spacecraft gets further away from Earth, as well as being able to operate autonomously without needing to wait for a radio signal to come from our solar system, says Massimiliano Vasile at the University of Strathclyde, UK. "If you travel to an actual star, we are talking about light years," says Vasile. "What happens is that your signal from the Deep Space Network has to travel all the way there and then all the way back, and it's travelling at the speed of light, so it takes years." Just like a ship's captain sailing by the stars, "We have a good enough three-dimensional map of the galaxy around us that you can find out where you are," Lauer says. So even when limiting your navigation to what's on-board the spacecraft, "It's a remarkable accuracy, with your own camera!"

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A Maine police department has now acknowledged "it inadvertently shared an AI-altered photo of drug evidence on social media," reports Boston.com: The image from the Westbrook Police Department showed a collection of drug paraphernalia purportedly seized during a recent drug bust on Brackett Street, including a scale and white powder in plastic bags. According to Westbrook police, an officer involved in the arrests snapped the evidence photo and used a photo editing app to insert the department's patch. "The patch was added, and the photograph with the patch was sent to one of our Facebook administrators, who posted it," the department explained in a post. "Unbeknownst to anyone, when the app added the patch, it altered the packaging and some of the other attributes on the photograph. None of us caught it or realized it." It wasn't long before the edited image's gibberish text and hazy edges drew criticism from social media users. According to the Portland Press Herald, Westbrook police initially denied AI had been used to generate the photo before eventually confirming its use of the AI chatbot ChatGPT. The department issued a public apology Tuesday, sharing a side-by-side comparison of the original and edited images. "It was never our intent to alter the image of the evidence," the department's post read. "We never realized that using a photoshop app to add our logo would alter a photograph so substantially."

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"Scientists have created the first lasers made entirely from edible materials," reports Science magazine "which could someday help monitor and track the properties of foods and medications with sensors that can be harmlessly swallowed." [The researchers' report] shows that tiny droplets of everyday cooking oils can act like echo chambers of light, otherwise known as lasers. By providing the right amount of energy to an atom, the atom's electrons will excite to a higher energy level and then relax, releasing a photon of light in the process. Trap a cloud of atoms in a house of mirrors and blast them with the right amount of energy, and the light emitted by one excited atom will stimulate one of its neighbors, amplifying the atoms' collective glow... [The researchers] shot purple light at droplets of olive oil, whose surfaces can keep photons of light bouncing around, trapping them in the process. This reflected light excited the electrons in the oil's chlorophyll molecules, causing them to emit photons that triggered the glow of other chlorophyll molecules — transforming the droplet into a laser. The energy of the chlorophyll's radiation depends on the oil droplets' size, density, and other properties. The study's authors suggest this sensitivity can be exploited to track different properties of food or pharmaceutical products. When researchers added oil droplets to foods and then measured changes in the laser light the droplets emitted, they could reliably infer the foods' sugar concentration, acidity, exposure to high temperatures, and growth of microorganisms. They also used the lasers to encode information, with droplets of different diameters functioning like the lines of a barcode. By mixing in sunflower oil droplets of seven specific sizes — all less than 100 microns wide — the researchers encoded a date directly into peach compote: 26 April, 2017, the first international Stop Food Waste Day. Thanks to long-time Slashdot reader sciencehabit for sharing the news.

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"Apple quietly dropped a new AI model on Hugging Face with an interesting twist," writes 9to5Mac. "Instead of writing code like traditional LLMs generate text (left to right, top to bottom), it can also write out of order, and improve multiple chunks at once." "The result is faster code generation, at a performance that rivals top open-source coding models." Traditionally, most LLMs have been autoregressive. This means that when you ask them something, they process your entire question, predict the first token of the answer, reprocess the entire question with the first token, predict the second token, and so on. This makes them generate text like most of us read: left to right, top to bottom... An alternative to autoregressive models is diffusion models, which have been more often used by image models like Stable Diffusion. In a nutshell, the model starts with a fuzzy, noisy image, and it iteratively removes the noise while keeping the user request in mind, steering it towards something that looks more and more like what the user requested... Lately, some large language models have looked to the diffusion architecture to generate text, and the results have been pretty promising... This behavior is especially useful for programming, where global structure matters more than linear token prediction... [Apple] released an open-source model called DiffuCode-7B-cpGRPO, that builds on top of a paper called DiffuCoder: Understanding and Improving Masked Diffusion Models for Code Generation, released just last month... [W]ith an extra training step called coupled-GRPO, it learned to generate higher-quality code with fewer passes. The result? Code that's faster to generate, globally coherent, and competitive with some of the best open-source programming models out there. Even more interestingly, Apple's model is built on top of Qwen2.5-7B, an open-source foundation model from Alibaba. Alibaba first fine-tuned that model for better code generation (as Qwen2.5-Coder-7B), then Apple took it and made its own adjustments. They turned it into a new model with a diffusion-based decoder, as described in the DiffuCoder paper, and then adjusted it again to better follow instructions. Once that was done, they trained yet another version of it using more than 20,000 carefully picked coding examples. "Although DiffuCoder did better than many diffusion-based coding models (and that was before the 4.4% bump from DiffuCoder-7B-cpGRPO), it still doesn't quite reach the level of GPT-4 or Gemini Diffusion..." the article points out. But "the bigger point is this: little by little, Apple has been laying the groundwork for its generative AI efforts with some pretty interesting and novel ideas."

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