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joshuark writes: BusPatrol, a company that has installed AI-powered cameras in tens of thousands of school buses around the U.S., now plans to turn those cameras into automatic license plate readers (ALPRs), capturing the location of every vehicle the buses drive past, and give that data to law enforcement, 404 Media has learned. BusPatrol has already taken steps to share the collected data with law enforcement contracting giant Axon, according to leaked BusPatrol documents and a source with knowledge of the plans. BusPatrol has acknowledged how controversial its plan to collect and share this data is, pointing specifically to concerns about ICE using license plate data, but emphasizes the likely success of selling the angle of protecting children. "Who would have thought that school buses would be turned into the mass surveillance state?," Michael Soyfer, an attorney from the Institute for Justice, which has various ongoing ALPR-related lawsuits The Institute for Justice argues that warrantless use of ALPR systems is unconstitutional, describing similar systems as a "dragnet." Kate Spree, senior manager of brand communications at BusPatrol, said in an email "This inquiry is based on a false premise and inaccurate information. BusPatrol does not pool or sell data across communities; student safety program data is used only to support the BusPatrol program in the community where that data was created." When 404 Media asked clarifying questions and said that the reporting is based on leaked BusPatrol material, Spree stopped replying to text messages and emails. This plan gives new meaning to the animated cartoon series "The Magic School Bus"... Further reading: FBI Wants to Buy Nationwide Access to License Plate Readers

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An anonymous reader quotes a report from Reuters: Elon Musk's Starlink and Amazon's low-earth-orbit satellite business may be able to acquire some European mobile satellite spectrum next year, two people with direct knowledge of the matter said on Tuesday. But they said two-thirds of the satellite spectrum that allows mobile devices and vehicles to communicate seamlessly even in remote locations, would be reserved for European companies. U.S. companies Viasat and EchoStar hold licenses that are due to expire in May 2027 and the European Commission has been considering how to allocate future spectrum at the same time as the bloc pushes to reduce reliance on U.S. tech. The European Union's IRIS2 multi-orbit array of 290 satellites, a response to Starlink, will be among the European companies to receive some spectrum, the sources said. British and Norwegian companies can also bid for a license, the people said. Details of the proposal, set to be announced on Wednesday, could still change at a meeting of commissioners on the day, one of the sources. Commission spokesman Thomas Regnier said EU-wide satellite connectivity was "synonymous with resilience, security, and capability" given the current geopolitical context. "Satellite connectivity is a key piece of our technological sovereignty, our security, and our defense, as also highlighted by IRIS2," he added.

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American Airlines plans to install SpaceX's Starlink Wi-Fi on more than 500 narrow-body Airbus aircraft starting early next year. It does not, however, have any immediate plans to change providers on its Boeing fleet, which currently uses a mix of Viasat and Panasonic. CNBC reports: American in January rolled out free in-flight Wi-Fi for members of its frequent flyer program, following United Airlines, Delta Air Lines and others. Delta in March said it would use Amazon Leo for in-flight Wi-Fi for hundreds of jets starting in 2028. United, Southwest Airlines and Alaska Airlines, which merged with Hawaiian Airlines in 2024, have selected Starlink. The move is a big win for SpaceX as it prepares for a potentially massive IPO next month. SpaceX said Starlink and its connectivity business generated $11.39 billion in revenue last year, accounting for 61% of the company's total sales.

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An anonymous reader quotes a report from Wired: Aerodynamic drag is a major "barrier" in high-speed airplanes, automobiles, and bullet trains. This is because a design with less aerodynamic drag allows the aircraft to move at higher speeds with less energy. When an aircraft or car body moves at high speed, a thin layer of air called the "boundary layer" is formed on its surface. This boundary layer has two states: laminar flow, in which air flows in an orderly fashion, and turbulent flow, which involves turbulence. The longer the air stays in the laminar flow state with low friction, the smaller the air resistance becomes, but as the air speed increases, it transitions to turbulent flow. The key to reducing aerodynamic drag is how to delay this transition to turbulence. For more than 80 years, the principle of "the surface of an object must be smooth" has been the basic premise of aeronautical engineering throughout the world in order to suppress the transition to turbulence and reduce aerodynamic drag. This premise was based on the results of a 1940 study by Ichiro Tani, a Japanese aerodynamicist who quantitatively demonstrated the relationship between "surface roughness" (an indicator of the state of the machined surface) and turbulent transition, arguing that surface roughness, which was unavoidable with the manufacturing technology of the time, prevented laminar flow from being realized. However, in 1989 Tani reinterpreted the experimental data on rough-surface pipes obtained by fluid engineer Johann Nikulase in the 1930s, bringing a new perspective that "roughness may not necessarily only promote turbulent transition and increase fluid resistance." Inheriting this idea, a research group led by Yasuaki Kohama of Tohoku University experimentally demonstrated in the 1990s that fibrous rough surfaces, which have fine fibrous irregularities on their surface, have the effect of delaying transition under certain conditions. The same Tohoku University research team recently announced a discovery that significantly advances this trend. Aiko Yakino, associate professor at Tohoku University's Institute of Fluid Science, and her research group were the first in the world to demonstrate that aerodynamic drag can be reduced by up to 43.6 percent simply by applying distributed micro-roughness (DMR), a surface roughness so fine and irregular that it cannot be distinguished by the naked eye. This technology is fundamentally different from the "rivulet (shark skin) process," which is known as a typical aerodynamic drag reduction technology. The rivulet process mimics the fine longitudinal grooves in shark skin, and by carving grooves approximately 0.1 mm wide along the direction of airflow, it aligns the vortices that occur near the wall surface of turbulent airflow areas. DMR, on the other hand, delays the switch from laminar to turbulent flow by means of random and minute irregularities. The flow zones it affects and the mechanisms it employs are based on completely different concepts.

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Hobbyist CNCDan is trying to build a real-world version of Windows' classic 3D Pinball for Windows -- Space Cadet, using 3D-printed flippers, bumpers, LEDs, slingshots, and a raised playfield modeled after the original virtual table. But in bringing the digital table into the real world, CNCDan has already run into several physical challenges the software never had to contend with... Ars Technica reports: After scaling and skewing the on-screen, perspective-shifted view of the Space Cadet playfield onto a 1-meter-tall table, he ended up with a rectangular playfield just 56 cm wide. That's on the smaller side for commercial pinball tables and maps to playfield bumpers that are just 53 mm wide -- way smaller than any prebuilt bumpers that are commercially available. Once CNCDan dealt with issues with unreliable plastic microswitches for those tiny bumpers (Hall effect magnets seemed to help), he ran into a separate problem with the even smaller bumpers on the raised playfield. The wiring for those bumpers had to be arranged very carefully to avoid blocking a kickback return alley underneath, a positioning problem that the original designers of the virtual table didn't have to consider at all. CNCDan also ended up adding a physical mechanism to simulate the short delay 3D Space Cadet players may remember, when the ball dropped down a hole from the raised playfield back to the flippers below. CNCDan says he's currently looking for artists to help him with a hand-drawn re-creation of the original Space Cadet playfield, which he doesn't want to use AI for. "I'm sure [AI] can do it, but I'd much rather give this job to a real human being," he said in the video.

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