TikTok’s big-screen app lands on Vizio TVs

TikTok users now have another way to catch up on their For You page. The app is available on Vizio smart TVs starting today and you’ll be able to watch TikTok TV content directly from the home screen.

The app, which landed on smart TVs from the likes of Samsung and LG last November, reworks the TikTok experience for big-screen viewing. TikTok TV features popular videos from categories including gaming, comedy, food and animals. If you have a TikTok account, you can log in to view videos from your Following and For You feeds. The app has an autoplay feature as well, so you’ll be able to watch an endless string of TikToks without interruption if you wish.

Juul’s e-cigarettes could be banned from sale in the US

The Food and Drug Administration could be set to bring the hammer down on vape pen maker Juul. The agency is preparing to order it to stop selling e-cigarettes in the US and the decision could come as soon as today, according to The Wall Street Journal.

Along with other e-cigarette makers, Juul was required to submit its products to the FDA for review in 2020. The agency has been looking into the possible benefits of vaping as an alternative to cigarettes, but the popularity of the products among young people has caused concern. The FDA has already cleared products from Juul’s rivals, Reynolds American (which is behind the Vuse brand) and NJOY.

The FDA has been scrutinizing Juul for several years. It seized marketing materials from the company for review in 2018 over concerns about underage vaping. In 2019, the FDA criticized the company for telling students its products were “totally safe” after it accused Juul of undermining efforts to clamp down on teen vaping.

The agency limited sales of flavored e-cigarettes in 2018 and banned several variants outright in early 2020 in an attempt to reduce the appeal of vaping among teens. Juul pre-empted that ban (perhaps in an attempt to get in the good graces of regulators and the public) when it stopped sales of mint- and fruit-flavored vape pods in 2019.

Several states have sued Juul, alleging that it targeted minors with marketing. It paid $40 million to settle a North Carolina suit in 2021, and a $22.5 million settlement in Washington state earlier this year. The Federal Trade Commission has also reportedly looked into Juul’s marketing tactics.

Juul will have the option of appealing a federal ban on sales of its products, if the FDA does take that step, or challenging it in court. Some observers have suggested that the company may ask for a stay while the agency reviews a version of the vape pen that has age verification tech. Engadget has contacted Juul for comment.

A blanket ban would likely prove devastating for Juul’s business. The WSJ notes that the vast majority of the company’s revenue comes from the US. Juul became the top e-cigarette brand in the country a few years ago, but sales have dropped and it’s now said to be in second place in the US market behind Vuse.

Meanwhile, the FDA is aiming to remove nearly all nicotine from cigarettes to make them less addictive. That could lead to millions of smokers switching to vaping or giving up smoking entirely.

Researchers built a low-cost camera system that recreates sound from vibrations

Researchers at Carnegie Mellon University have developed a camera system that can seemingly detect sound vibrations with a level of precision that makes it possible to recreate the audio without inference or a microphone. A team from CMU’s School of Computer Science’s Robotics Institute (RI) built the system, which has two cameras and a laser. It can detect “high-speed, low-amplitude surface vibrations” that the human eye can’t see, the university said in a press release.

The system features regular cameras rather than high-speed ones used in previous research, which should lower the cost. “We’ve made the optical microphone much more practical and usable,” Srinivasa Narasimhan, an RI professor and head of the Illumination and Imaging Laboratory, said. “We’ve made the quality better while bringing the cost down.”

An algorithm compares speckle patterns captured by a rolling shutter and a global shutter. It uses the differences between the patterns to calculate the vibrations and recreate the audio. A speckle pattern (which is created by the laser in this case) refers to the behavior of coherent light in space after it’s reflected off of a rough surface. That behavior changes as the surface vibrates. The rolling shutter rapidly scans an image from one end to the other, while a global shutter captures an entire image at the same time. 

“This system pushes the boundary of what can be done with computer vision,” assistant professor Matthew O’Toole, a co-author of a paper on the system, said. “This is a new mechanism to capture high speed and tiny vibrations, and presents a new area of research.”

The researchers say they were able to isolate the audio of guitars that were being played simultaneously. They claim that the system was able to observe a bag of chips, and use vibrations from that to reconstruct audio being emitted by a nearby speaker with higher fidelity than previous optical microphone approaches.

There are a lot of potential applications for this tech. The researchers suggest, for instance, that the system could monitor vibrations from machines in a factory to look for signs of problems. Sound engineers could also isolate the sound from an instrument to improve the mix. In essence, it could help eliminate ambient noise from audio recordings.

NASA picks three companies to develop lunar nuclear power systems

NASA and the Department of Energy have awarded contracts to three companies that are designing concepts to bring nuclear power to the Moon. The agencies will award Lockheed Martin, Westinghouse and IX around $5 million each to fund the design of a fission surface power system, an idea that NASA has been working on for at least 14 years. 

The three companies are being tasked with developing a 40-kilowatt class fission power system that can run for at least 10 years on the lunar surface. NASA hopes to test the system on the Moon as soon as the end of this decade. If the demonstration proves successful, it could lead to nuclear energy powering long-term missions on the Moon and Mars as part of the Artemis program. “Developing these early designs will help us lay the groundwork for powering our long-term human presence on other worlds,” Jim Reuter, associate administrator for NASA’s Space Technology Mission Directorate, said in a statement.

Under the 12-month contracts, Lockheed Martin will partner with BWXT and Creare. Westinghouse will team up with Aerojet Rocketdyne, while IX (a joint venture of Intuitive Machines and X-Energy) will work with Maxar and Boeing on a proposal.

Lockheed Martin was one of three companies chosen by the Pentagon’s Defense Advanced Research Projects Agency last year to develop nuclear-powered spacecraft. The Defense Department has also sought nuclear propulsion systems for spacecraft.

Cryptocurrency is more centralized than many advocates claim, according to report

One of the big advantages of cryptocurrency over other financial systems, according to many of its proponents, is that no particular company, central bank or government has control. That’s not necessarily the case, though. Researchers who worked on a report commissioned by the Defense Advanced Research Projects Agency (DARPA) found that there can be “unintended centralities” in these supposed decentralized systems.

“It’s been taken for granted that the blockchain is immutable and decentralized, because the community says so,” said Dan Guido, CEO of Trail of Bits, the software security research company that worked on the report. He told NPR that cryptocurrency power is concentrated among people or organizations that have a large chunk of the pie. Almost like any other capitalist system, some might argue.

Trail of Bits defined “unintended centralities” as circumstances under which an entity has sway over a so-called decentralized system, which could afford them the opportunity to tamper with records of ownership. The report also notes that three ISPs handle 60 percent of all bitcoin traffic. A blockchain network could be disrupted if a communications regulator, a hacker or someone else with oversight of one of those ISPs slowed down or halted bitcoin traffic.

There are also weaknesses in the bitcoin network itself. The report found that 21 percent of nodes are running an old, vulnerable version of the core bitcoin client. Those systems could be targeted in an attempt by an attacker who’s looking to take over the majority of a blockchain network, though that seems relatively unlikely given the size of the bitcoin network.

Some of these situations are theoretical, but the report highlights some of the deficiencies of blockchain tech. There have been some clear instances of centralization impacting parts of the ecosystem, however.

It was reported this week that lending platform Solend (which is based on the Solana blockchain) tried to take control of its single largest account, because it said the operator could have significant sway over market movements. Solend planned to temporarily take over the “whale” investor’s account in order to liquidate their position “gracefully” and avoid possible disruption.

A proposal allowing the platform to carry out the controversial move (Solend calls itself a “decentralized protocol,” after all) passed on Sunday. However, Solend’s users voted on another proposal to overturn the first one, with 99.8 percent of votes in favor. As it turns out, the holder of the account in question had more than 1 million of the 1.48 million total votes. Solend is trying another method of liquidating the whale’s position, but for now, the platform’s power seems to be centralized in that account holder’s favor.

Amazon is opening a center for quantum networking research

Several major companies are working on quantum computing projects, including IBM and Google. Amazon is also in the mix. The company opened the AWS Center for Quantum Computing last year and has offered quantum computing via Amazon Web Services since 2019. It’s expanding that work to what it says is an essential aspect of helping quantum tech reach its full potential: quantum networking. As such, the company has announced the AWS Center for Quantum Networking (CQN).

As with quantum computing, it’s early days for quantum networking. It will likely take several more years before researchers start getting the most out of quantum tech. However, Amazon has more resources than most to invest in the field.

Amazon notes that quantum networks will be able to connect quantum devices using single photons rather than laser beams (which are utilized in modern optical communications). However, along with enabling certain capabilities of quantum networks, there are some hurdles to overcome when it comes to using a single photon. Quantum mechanics limits the amplification of a single photon, which restricts the range of a network. “Also, the weakness of single photons complicates interfacing them with today’s quantum computing devices,” CQN research scientists Denis Sukachev and Mihir Bhaskar wrote in a blog post.

Researchers at the center will work on new technologies, such as quantum repeaters and transducers, to allow for the creation of global quantum networks. They’ll develop hardware, software and apps for quantum networks.

Among the potential applications of quantum networking is “enabling global communications protected by quantum key distribution with privacy and security levels not achievable using conventional encryption techniques,” Sukachev and Bhaskar wrote. “Quantum networks will also provide powerful and secure cloud quantum servers by connecting together and amplifying the capabilities of individual quantum processors.”

‘Diablo Immortal’ delayed indefinitely in China just before its planned release date

Diablo Immortal was supposed to debut in China on June 23rd, but those who have been waiting for the game in the country will need to wait longer. NetEase, which co-developed the game with Blizzard, has pushed back the release date indefinitely. It wrote in a blog post that “the development team is making a number of optimization adjustments.”

However, there are other factors at play. NetEase found itself in the bad graces of China’s censors over a post on its Weibo social media service that seemingly referenced Winnie the Pooh, according to the Financial Times. The cartoon character is used to mock Chinese President Xi Jinping.

In the wake of a screenshot of the post (which read “why hasn’t the bear stepped down?”) gaining traction, the official Diablo Immortal Weibo account was banned from posting anything. Discussions related to the post were also wiped from the service.

Currently, Diablo Immortal does not have a release date in China, though NetEase still expects to ship the game in the country. It promised players an “exclusive thank-you package containing legendary equipment” as a makegood for the delay.

The PC and mobile title debuted in other territories this month. According to reports, it raked in $24 million in two weeks as a result of its aggressive approach to monetization. China is the biggest gaming market on the planet and not being able to release Diablo Immortal there would likely have a severe impact on the game’s expected revenues. NetEase declined to comment to the Financial Times. Engadget has contacted Blizzard for comment.

It’s not the first time a game developer has run into issues with Chinese regulators over a Winnie the Pooh reference. Publisher Indievent lost its license to sell Devotion in China, leading it to cut ties with developer Red Candle Games, which included a blatant dig at Xi in the game itself. The studio, which is based in Taiwan, later started selling a DRM-free version of Devotion on its own storefront.