Some sleep specialists are warning that the apps and devices that are used to track your sleep may provide inaccurate data and can exacerbate symptoms of insomnia. "Fiddling with your phone in bed, after all, is bad sleep hygiene," reports The New York Times. "And for some, worrying about sleep goals can make bedtime anxiety even worse." From the report: There's a name for an unhealthy obsession with achieving perfect sleep: orthosomnia. It was coined by researchers from Rush University Medical School and Northwestern University's Feinberg School of Medicine in a 2017 case study published in the Journal of Clinical Sleep Medicine. Dr. Kelly Baron, one of the paper's authors and the director of the University of Utah's behavioral sleep medicine program, said that sleep trackers can be helpful in identifying patterns. She herself tracks her bedtime with a Fitbit. But she said she had noticed a trend of patients complaining based on unverified scores, even for things like the amount of deep sleep, which varies by individual.

In the case study on orthosomnia, researchers found that patients had been spending excessive time in bed to try to increase their sleep numbers, which may have made their insomnia worse. And they found it difficult to persuade patients to stop relying on their sleep trackers, even if the numbers had been flawed. Researchers say that trackers can overestimate the amount of sleep that you get, particularly if they focus on tracking movement. If you are lying awake in bed, the tracker might think that you're asleep. While devices that track heart rate or breathing give a more complete picture, they are still only generating estimates.

Huawei is reportedly inviting Google Play Store developers to publish apps for the Huawei EMUI AppGallery, a month after it was reported that future Android handsets from the Chinese group won't support Google Play Store. From a report: An anonymous developer on Monday showed the email to XDA Developers, with Huawei apparently sending out invitations to join AppGallery and saying it has 270 million monthly active users across 350 million phones, and a community of 560,000 developers. "In order to guarantee a smooth usage of your app for our users, Huawei is committed to provide you with full support, to help you publish your app into AppGallery," the emailed invitation reportedly says. It also offers access to join the Huawei Developer portal for free, XDA Developers reported.

An anonymous reader quotes a report from TechCrunch: Apple's truly transforming into a privacy-as-a-service company, which shows in the way that it's implementing both the new single sign-on account service, as well as its camera and location services updates in iOS 13. The SSO play is especially clever, because it includes a mechanism that will allow developers to still have the relevant info they need to maintain a direct relationship with their users -- provided users willingly sign-up to have that relationship, but opting in to either or both name and email sharing.

Apple's work with camera providers is also unique -- providing actual on-device analysis of footage captured by third-party partners to deliver things that security device makers have typically offered as a value-add service themselves. That includes apparent identification of visitors to your home, for instance, and sending alerts when it detects people, as well as being able to differentiate that from other kinds of motion. That's going above and beyond simply protecting your data: It's replacing a potential privacy-risk feature with a privacy-minded one, at a service level across an entire category of devices. The new location services feature also makes it possible to provide single-use location permissions to apps, putting all the control with users instead of with service providers.

"Other new features, including HomeKit firewalling of specific services and devices, are similar in tone, and likely indicate what Apple intends to do more of in the future," the report adds. "Combined with its existing efforts, this begins to paint a picture of where Apple plans to play in offering a comprehensive consumer services product that is substantially differentiated from similar offerings by Google and others."

Apple, which has already introduced "dark mode" in macOS, is widely expected to replicate this in its mobile operating system iOS this year. The move comes as a number of technology companies introduce dark mode in their apps and operating systems. But is it something everyone wants?

TidBITS: When text is white on a black background as it would be in Dark Mode, the whiteness of the lines lightens the edges of each line broadly on both sides, blurring the edge. If the thin lines of the text are black and the background is white, however, white from both sides washes over the entire line, lightening it evenly, so the edges aren't blurred. Blur is a bad thing because of how the human eye relies primarily on contrast when extracting detail from an image. In "Reality and Digital Pictures" (12 December 2005), Charles wrote: The eye does not see light per se, it sees changes in light -- contrast. If two objects do not contrast with one another, to the eye they meld into one. This fact makes controlling the contrast of adjacent details to be paramount in importance. He was focused on issues revolving around photographs, but contrast has been shown to be paramount in numerous studies of textual legibility as well.

Of course, contrast goes in both directions -- black on white and white on black both have high contrast. In the scientific literature, black on white is called "positive polarity," whereas white on black is called "negative polarity." Numerous studies over decades of research have found that positive polarity displays provide improved performance in a variety of areas. [...] Taptagaporn and Saito (1990, 1993) tracked changes in pupil size for different illumination levels as well as for the viewing of different visual targets, such as a cathode ray tube (CRT) display, script and keyboard. They found less visual fatigue as measured by the frequency of changes in pupil size when working was accomplished with a positive than with a negative polarity display. Likewise, Saito, Taptagaporn, and Salvendy (1993) found faster lens accommodation and thus faster focusing of the eye with positive than with negative polarity displays.

To summarize, a dark-on-light display like a Mac in Light Mode provides better performance in focusing of the eye, identifying letters, transcribing letters, text comprehension, reading speed, and proofreading performance, and it results in less visual fatigue and increased visual comfort. The benefits apply to both the young and the old, as that paper concludes: In an ageing society, age-related vision changes need to be considered when designing digital displays. Visual acuity testing and a proofreading task revealed a positive polarity advantage for younger and older adults. Dark characters on light background lead to better legibility and are strongly recommended independent of observer's age.

"Online marketplace eBay has revealed how it boosted performance of a demanding web app by 50x using WebAssembly," reports TechRepublic: The "astonishing" speed-up after switching from a JavaScript-based to a largely WebAssembly-based web app was detailed by the eBay engineering team, who say the performance boost helped make it possible to build a highly-accurate barcode scanner as a web app... a feature it offers in its Android and iOS apps to allow sellers to scan items they are auctioning. "WebAssembly was different. It has tremendous potential, we just did not have the right use case. Well, that changed recently," write the eBay software engineering team.

One of the advantages of WebAssembly (Wasm) is that it offers code portability for a variety of languages, allowing developers to take code they've written for other platforms and compile to WebAssembly so it can run in major web browsers. Consequently eBay was able to take the existing version of its barcode scanner written in C++ and compile that to Wasm using Emscripten, adopting the Docker and Node.js-based approach outlined here. After a few minor teething problems, the eBay team were able to run the barcode scanner in the browser, using a Worker thread and JavaScript glue code.

The Wasm-based scanner was able to process images of the barcode at 50 Frames per Second (FPS), compared to about 1FPS in an earlier JavaScript-based scanner eBay had tested, a speed-up the team described as "astonishing".
Unfortunately, the Wasm code only successfully completed scans 60% of the time, because it wasn't using the inbuilt APIs available for the C++ code to either autofocus or provide user tap focus for the center of the scanned object. eBay's team ultimately ended up implementing three separate worker threads running the Wasm code, the open-source barcode reader ZBar, and their original JavaScript-based scanner code.

"The winning response (i.e. the first one to send a valid barcode) is sent to the main thread, and all workers are terminated... With three threads racing against each other, the success rate was indeed close to 100%."

A confidential Facebook document reviewed by The Intercept shows that Facebook courts carriers, along with phone makers -- some 100 different companies in 50 countries -- by offering the use of even more surveillance data, pulled straight from your smartphone by Facebook itself. From the report: Offered to select Facebook partners, the data includes not just technical information about Facebook members' devices and use of Wi-Fi and cellular networks, but also their past locations, interests, and even their social groups. This data is sourced not just from the company's main iOS and Android apps, but from Instagram and Messenger as well. The data has been used by Facebook partners to assess their standing against competitors, including customers lost to and won from them, but also for more controversial uses like racially targeted ads.

Some experts are particularly alarmed that Facebook has marketed the use of the information -- and appears to have helped directly facilitate its use, along with other Facebook data -- for the purpose of screening customers on the basis of likely creditworthiness. Such use could potentially run afoul of federal law, which tightly governs credit assessments. Facebook said it does not provide creditworthiness services and that the data it provides to cellphone carriers and makers does not go beyond what it was already collecting for other uses.

"Twitter is upgrading its API to be more standards-compliant and more modern," writes longtime Slashdot reader andyp. "They also want to collaborate with developers as they create the new API platform." VentureBeat provides more details: Twitter today announced plans to build "the next generation of the Twitter API" that will provide more flexibility and better serve developers. As a first step, the company is launching the Twitter Developer Labs program to let developers preview new features and test new API products before they are finalized. Participating developers will be asked to provide feedback on what they like and don't like ahead of the broad rollout. Twitter announced Twitter API version 1.1 in August 2012. The social network and what developers use it for have changed a lot since then. Twitter has added enterprise data APIs and the Ads API, but the main API has largely stagnated. At the same time, Twitter has burned developers again and again. The first new features that will be released in Labs are GET /tweets and GET /users. After that, Twitter will release new versions of functionality to filter and search tweets, and to get tweet engagement and impression metrics.

If you'd like to participate in Labs, Twitter says you must follow these steps:
1. Visit the Labs page and sign up to receive updates.
2.Create a developer account (if you haven't yet). Access to Labs will require a developer account, even if you have an active app created through the former apps.twitter.com website.
3.Review the Labs documentation to learn more about what's coming (and follow @TwitterDev).
4. Share feedback.

Facebook revealed last Friday that it has filed a lawsuit alleging South Korean analytics firm Rankwave abused its developer platform's data, and has refused to cooperate with a mandatory compliance audit and request to delete the data. TechCrunch reports: Facebook's lawsuit centers around Rankwave offering to help businesses build a Facebook authorization step into their apps so they can pass all the user data to Rankwave, which then analyzes biographic and behavioral traits to supply user contact info and ad targeting assistance to the business. Rankwave also apparently misused data sucked in by its own consumer app for checking your social media "influencer score." That app could pull data about your Facebook activity such as location checkins, determine that you've checked into a baseball stadium, and then Rankwave could help its clients target you with ads for baseball tickets.

The use of a seemingly fun app to slurp up user data and repurpose it for other business goals is strikingly similar to how Cambridge Analytica's personality quiz app tempted millions of users to provide data about themselves and their friends. TechCrunch has attained a copy of the lawsuit that alleges that Rankwave misused Facebook data outside of the apps where it was collected, purposefully delayed responding to a cease-and-desist order, claimed it didn't violate Facebook policy, lied about not using its apps since 2018 when they were accessed in April 2019, and then refused to comply with a mandatory audit of its data practices. Facebook Platform data is not supposed to be repurposed for other business goals, only for the developer to improve their app's user experience.

Ivan Mehta, writing for The Next Web: Last year, Netflix reportedly published a whopping 1,500 hours of original content. And with the launch of streaming services from Apple and Disney, the on-demand video market is getting very competitive. Media houses and companies are already looking towards the next solution for producing content to keep up with the trend: AI avatars. Here's one sample: Last year in November, Chinese state-run media company Xinhua debuted an AI anchor that looked exactly like its real-life counterpart Zhang Zhao. The company said that the avatar speaks both in Mandarin and English. Xinhua said at that time that AI anchors are now officially a part of their team; aiming to provide "authoritative, timely and accurate news" round the clock, through its apps and social channels like WeChat. A report from Tencent news published in February stated that the first batch of AI Anchors has produced more than 3,400 news reports, with a cumulative time of more than 10,000 minutes. It even debuted a female AI anchor named Xin Xiaomeng in February. These numbers indicate that at this rate, AI anchors can outwork their human counterparts very soon.

An anonymous reader quotes a report from ZDNet: When Microsoft launched UWP in 2015, officials promised that the platform would provide apps with better performance and security because they'd be distributable and updatable from the Microsoft Store. Developers would be able to use a common set of programming interfaces across Windows 10, Windows Phone, HoloLens and more, officials said, when selling the UWP vision. The downside: UWP apps would work on Windows 10-based devices only. Developers would have to do work to get their apps to be UWP/Store-ready. And Win32 apps wouldn't get UWP features like touch and inking. Arguably, [Kevin Gallo, Corporate Vice President of the Windows Developer Platform] told me, "we shouldn't have gone that way," meaning creating this schism. But Microsoft execs -- including Gallo -- continue to maintain that UWP is not dead. Over the past year or so, Microsoft has been trying to undo some of the effects of what Gallo called the "massive divide" between Win32 and UWP by adding "modern desktop" elements to Win32 apps.

"By the time we are done, everything will just be called 'Windows apps,'" Gallo told me. "We're not quite there yet." But the ultimate idea is to make "every platform feature available to every developer." In short, Microsoft's new goal is to try to make all features available to all of the Windows frameworks. Saying that Microsoft is dropping or deprecating any of the Windows frameworks seems to have been declared from on-high as a big no-no. Instead, Win32, UWP, Windows Presentation Foundation are all "elevated to full status," as Gallo told me. What about the Microsoft Store? Gallo says it's not dead. In Gallo's view, "the Store is about commerce. It's another channel for distribution." But it's not the only way Windows users will be able to get apps. "You can trust apps differently. They don't need to be in the Store. People really just want to know if Microsoft considers an app good," he said.

ZDNet's Mary Jo Foley says "it sounds like Microsoft may be moving toward a model of getting apps Microsoft-certified and trusted and then allowing Windows developers to decide how best to distribute them -- via the Microsoft Store, the Web or other methods of their choosing."

New submitter Schnapple writes: Back in 2009, id Software put Wolfenstein 3D and DOOM on the App Store, but once iOS 11 started phasing out 32-bit apps, they stopped working. Since their source code was published under the GPL, I went in and fixed them up so they would run on modern devices, and also added game controller support and ported them to tvOS so they could run on Apple TV. Then over the last year I did the same for DOOM II and Final DOOM, Quake, Quake II, Quake III: Arena, Return to Castle Wolfenstein, and finally DOOM 3. I've chronicled the adventures on my blog. I can't publish them to the App Store for obvious reasons and you'll need to provide your own copy of the game data, but if anyone's interested in trying them out on Apple devices I've posted the sources to GitHub.

Google has announced that it is giving users greater control over how long the company holds on to location history and activity data. From a report: A new time-limiting feature makes it possible to have information such as account activity and location data automatically deleted after a period of time. The privacy-focused move comes after feedback to Google which found users wanted the company to provide simpler ways to manage or delete the private data it holds. The announcement comes months after Associated Press reported that a number of Google apps store the timestamped locations of the devices on which they're installed.

An anonymous reader quotes a report from Ars Technica: Google is releasing the second Android Q Beta today. As we learned with the first release, Android Q is bringing support for foldable smartphones, better privacy and permissions controls, and a grab bag of other features. We've yet to install the second beta on one of our own devices, but Google's release blog post promises "bug fixes, optimizations, and API updates," as well as a crazy new multitasking feature and an emulator for foldables. Android loves multitasking. So far we've had split screens and floating windows, and Android Q Beta 1 even had a hidden desktop mode. Beta 2 brings us a new multitasking feature called "Bubbles." Bubbles let you minimize an app into a little circle, which floats around on the screen above all your other apps. Tapping on a bubble will open a small UI. The only demo Google shows is one for a messaging app. Each bubble is a contact, and tapping on the bubble shows a small chat UI. If you remember Facebook's "Chat Head" UI for Messenger, Bubbles is that, but built into the OS. "Bubbles are great for messaging because they let users keep important conversations within easy reach," Google said in their blog post. "They also provide a convenient view over ongoing tasks and updates, like phone calls or arrival times. They can provide quick access to portable UI, like notes or translations, and can be visual reminders of tasks too."

An anonymous reader shares a report: What better way to replace New York City's thousands of aging pay phones than with 9.5-foot-tall kiosks outfitted with 55-inch HD displays, gigabit internet, and Android tablets preloaded with informational apps? So went the thinking back in 2014, when then-mayor Michael Bloomberg launched a competition -- the Reinvent Payphones initiative -- calling on private enterprises, residents, and nonprofits to submit designs for spruced-up, publicly accessible hubs that would provide advertising-subsidized services to the public. CityBridge's LinkNYC beat out piezoelectric pressure plates, EV charging stations, and other competing proposals for a contract, and the consortium wasted no time in getting to work.

Intersection -- which with Qualcomm and CIVIQ Smartscapes manages the kiosks -- said it plans to spend $200 million laying down 400 miles of new communication cables and installing as many as 10,000 Links that supply free Wi-Fi to passersby within a 150-foot radius. The first kiosk went online in January, though the project has quite a ways to go -- 1,780 Links are active currently, short of the initial goal of 4,500 kiosks by July of this year. [...] And the initial kiosks have really taken off. According to Intersection, the LinkNYC network now has more than 6 million unique users who have used 8.597 terabytes of data collectively -- equivalent to about 1.3 billion songs or 292 billion WhatsApp messages. And the project facilitates 600,000 phone calls every month, up from 500,000 in September of last year. Further reading: Free Municipal Wi-Fi May Be the Next Front In the War Against Privacy.

Last year, a Belgian court ruled that Facebook would have to stop tracking Belgian internet users and delete the data it's already gathered on them, or face fines of about $280,000 a day. "Belgium's data-protection regulators have targeted the company since at least 2015 when a court ordered it to stop storing non-users' personal data," Mercury News reported at the time. Facebook is now fighting the Belgian court's decision, and will go "face to face with the Belgian data protection authority in a Brussels appeals court for a two-day hearing starting on Wednesday," reports Bloomberg. From the report: Armed with new powers since the introduction of stronger European Union data protection rules, Belgium's privacy watchdog argues Facebook "still violates the fundamental rights of millions of residents of Belgium." The Brussels Court of First Instance in February 2018 ruled that Facebook doesn't provide people with enough information about how and why it collects data on their web use, or what it does with the information. "Facebook then uses that information to profile your surfing behavior and uses that profile to show you targeted advertising, such as advertising about products and services from commercial companies, messages from political parties, etc," the Belgian regulator said in an emailed statement on Wednesday.

Belgium's data protection authority last year won the court's backing for its attack against Facebook's use of cookies, social plug-ins -- the "like" or "share" buttons -- and tracking technologies that are invisible to the naked eye to collect data on people's behavior during their visits to other sites. Facebook understands "that people want more information and control over the data Facebook receives from other websites and apps that use our services," the company said in a statement. "That's why we are developing Clear History, that will let you to see the websites and apps that send us information when you use them, disconnect this information from your account, and turn off our ability to store it associated with your account going forward," it said. "We have also made a number of changes to help people understand how our tools work and explain the choices they have, including through our privacy updates."

An anonymous reader quotes a report from Bleeping Computer: Microsoft has started to display notifications in the Windows 10 Action Center asking users to have a phone call with Microsoft developers and provide direct feedback about the ALT+TAB feature in Windows. While using a Windows 10 Insider build today, I was shown a Feedback Hub notification stating that "Microsoft wants to hear your opinions! To set up a phone call with Windows engineers, go to: http://www.aka.ms/alttab." This link then redirects to a web page at https://ux.microsoft.com/?AltTab. It is not known if this is only being shown to Windows Insiders users at this time.

When users visit this link they will be shown a Microsoft User Research page stating that a Windows 10 product team is looking to "understand our customer needs" and would like to have an anonymous 5-10 minute phone call with the user. In this particular case, the phone call will be with Microsoft engineers to discuss how users use the ALT+TAB feature to switch between apps. Microsoft states they are performing these calls in order to get a better understanding of how a feature is being used while they are in development. According to the web site, Windows engineers will be available on 3/11/2019 between 11:15 AM and 1:00 PM PST and on 3/12/2019 between 9:30 AM and 11:30 AM PST to schedule a call. The page goes on to say that users can expect a 5-10 minute call, but that it could last longer if there is more to discuss. They also state that the calls are not being recorded, are anonymous, and the content of the call will not be stored.

An anonymous reader quotes a report from Ars Technica, written by Peter Bright: Ever since the first Xbox was released, an obvious question has been hanging in the air: Microsoft already owns one of the premier gaming platforms, the PC, and both the original Xbox and the current Xbox One are more or less PCs anyway, so when is Microsoft going to bring the two together and let us play Xbox games on Windows? With the new Windows 10 builds, it looks like the company is taking some big steps in that direction. Microsoft has put big chunks of the Xbox infrastructure into Windows 10. This starts right from the moment you download the game: it's coming from the Xbox distribution servers, not the usual ones for Store apps. The game package itself uses a format called .xvc, which is used for Xbox One games, and there are PowerShell commands to work with these .xvc files and install .xvc games. Microsoft Gaming Services includes portions of this Xbox infrastructure; it includes a couple of drivers ("Microsoft Gaming Filesystem Driver" and "Microsoft Gaming Install Filter Driver"), along with a number of libraries that provide Xbox APIs.

The last few Windows 10 preview builds have included some vague instructions from Microsoft to install a special edition of a game, State of Decay, and report any problems with the process. There are no problems with playing the game but, rather, problems with installing and launching it. The instructions didn't give any indication as to why or what to look for. Naturally, people have been taking a closer look to see what's special about State of Decay and figure out why Microsoft is having Windows Insiders test it. Nazmus Khandaker, Rafael Rivera, and the pseudonymous WalkingCat have been poking around both the special edition of State of Decay and a helper application called Microsoft Gaming Services that insider machines are running. Brad Sams wrote up his findings. [...] The State of Decay package does nonetheless contain PC-oriented elements. In particular, it tries to install and update the DirectX runtime during its setup. We the users don't seem to be at the stage of simply running Xbox games unmodified on our PCs, or at least, not yet. But it looks as if the groundwork is being laid. The strange preview of a 2020 Windows release looks like it contains even more of this infrastructure, with signs of a layer to support Xbox's Direct3D variant on PC. "Microsoft could go the whole hog and simply make a Windows 10 PC with a suitable hardware spec into an Xbox that can play any Xbox game," writes Bright, adding: "it might just be there as a simple option for developers to enable if they choose."

An anonymous reader quotes a report from TechCrunch: Apple is telling app developers to remove or properly disclose their use of analytics code that allows them to record how a user interacts with their iPhone apps -- or face removal from the app store, TechCrunch can confirm. In an email, an Apple spokesperson said: "Protecting user privacy is paramount in the Apple ecosystem. Our App Store Review Guidelines require that apps request explicit user consent and provide a clear visual indication when recording, logging, or otherwise making a record of user activity." "We have notified the developers that are in violation of these strict privacy terms and guidelines, and will take immediate action if necessary," the spokesperson added.

It follows an investigation by TechCrunch that revealed major companies, like Expedia, Hollister and Hotels.com, were using a third-party analytics tool to record every tap and swipe inside the app. We found that none of the apps we tested asked the user for permission, and none of the companies said in their privacy policies that they were recording a user's app activity. Even though sensitive data is supposed to be masked, some data -- like passport numbers and credit card numbers -- was leaking.

Last week, Ars Technica reported that Verizon's new "spam" fee for texts sent from teachers to students might stop working on the network because of a dispute over texting fees that Verizon demanded from Remind, the company that operates the service. Now, it appears that Verizon "has backed down from its original position slightly, and ongoing negotiations could allow the free texting service to continue," reports Ars. From the report: As we reported Monday, the dispute involves Verizon and Remind, which makes a communication service used by teachers and youth sports coaches. Verizon is charging an additional fee, saying the money will be used to fund spam-blocking services. The fee would increase Remind's costs for sending texts to Verizon users from a few hundred thousand dollars to several million dollars per year, Remind said. Remind said it would absorb the cost in order to continue providing the paid version of its service. But most of Remind's 30 million users rely on the free version of the service, and Remind said it could no longer provide free text message notifications over Verizon's network unless the fee is reversed.

Verizon issued an announcement today, titled "App provider Remind threatens to eliminate a free texting service for K-12 education organizations (which will cost it nothing)." The title reflects a new offer Verizon said it made on Tuesday, which would reverse the fee for K-12 users of the free Remind service. "Verizon will not charge Remind fees as long as they don't begin charging K-12 schools, educators, parents and students using its free text message service," Verizon said. "Despite this offer, made Tuesday, Remind has not changed its position that it will stop sending free texts to Verizon customers who use the service regarding school closures, classroom activities and other critical information." The report goes on to note that simply limiting the offer to K-12 users means the fee "would still be charged for preschools, day-care centers, and youth sports coaches who use the free Remind service."

In a bid to deliver better software experience on devices powered by 64-bit processors in the coming years, Google aims to shift Android towards a 64-bit app ecosystem. From a report: The company has now shed more light on the transition and has announced that developers will have to submit a 64-bit version of their Android apps starting August this year. This move will eventually culminate in a universal implementation of the 64-bit app policy that will be enforced in 2021, after which, Google will no longer host 32-bit apps on the Play Store accessed on a device based on 64-bit hardware. Google announced the move towards 64-bit apps in 2017, claiming that apps with 64-bit code offer significantly better performance. However, the search giant did not provide any details regarding the exceptions to the new rule or when the Play Store will cease to serve 32-bit apps. Google has now revealed that starting August 1 this year, developers must submit 64-bit versions of all new apps and app updates, alongside the old 32-bit versions prior to their publishing from the Play Store.