Author and programmer Jeff Geerling explains in a blog post why the new Raspberry Pi 4 needs a fan. Unlike previous Pis that didn't require a fan or heatsink to avoid CPU throttling, the Pi 4 is a different beast and "pretty much demands a fan," writes Geerling. "Not only does the CPU get appreciably hot even under normal load, there are a number of other parts of the board that heat up to the point they are uncomfortable to touch." After 5 minutes at idle, he recorded the CPU/System-on-a-Chip (SoC) was around 60C, and it climbed to the 60-70C range when using the USB ports.

"[I]magine if you're truly using the Pi 4 as a desktop replacement, with at least one external USB 3.0 hard drive attached, WiFi connected and transferring large amounts of data, a USB keyboard and mouse, a few browser windows open (the average website these days might as well be an AAA video game with how resource-intense it is), a text editor, and a music player," writes Geerling. "This amount of load is enough to cause the CPU to throttle in less than 10 minutes." So, Geerling did what any programmer and DIYer would do and decided to add a fan himself to the official case -- and in addition to the blog post describing the process, he made a 22-minute-long video showing you what he did. From the post: Without any ventilation, it's kind of a little plastic oven inside the Pi 4 case. A heat sink might help in some tiny way, but that heat has nowhere to go! So I decided to follow the lead of Redditor u/CarbyCarberson and put a fan in the top cover. [...] After installing the fan, I booted the Pi and ran "stress --cpu 4" and let it go for an hour. The entire time, the CPU's temperature stayed at or under 60C (140F), a full 20C lower than the throttling point.

There are some other options which may be even easier than modifying the official case, like the Fan Shim from Pimoroni or purchasing a 3rd party case with a fan built in. But this option was easy enough and all I needed to complete the project was a $4 fan and a $7 hole saw drill bit (which I can use for other projects in the future).

Zac Bowden from Windows Central makes the case for why Microsoft may want to make a Surface phone that runs Android. An anonymous reader shares an excerpt from the report: While a Surface Phone running Android would never sell to the quantity that Samsung smartphones do (or at least not a first- or second-generation phone), Microsoft could utilize the Surface brand to showcase the best of Microsoft's Android efforts all in one place, just like it has done for Windows PCs. I'm picturing a Surface-branded, Microsoft-built smartphone that comes with Microsoft Launcher, Edge, Office, Your Phone phone-mirroring integration, and more, out of the box. In fact, that's one of four unique selling points that a Surface Phone running Android could have:

-- Showcase the best of Microsoft's efforts on Android.
-- Seamless integration with Windows PCs using Your Phone.
-- Provide the best security and update support on Android.
-- Brand recognition that can rival Apple and Samsung.

That last point is more for Microsoft fans, but the first three are important. A Surface Phone running Android would be the only smartphone out there that's always guaranteed to work with all of Your Phone's features. I have a wide array of Android smartphones, yet 90 percent of them don't support all of Your Phone's features on Windows 10. Screen mirroring is only available on select devices, and while that may improve, there's no guarantee your smartphone will ever get it, or if it'll work well. Microsoft could also provide enhanced features, such as the ability to take cellular phone calls on your PC directly from your Surface Phone. It could also build out dedicated Phone and SMS apps that sync up with the Messages app on your PC, instead of having to relay it through the Your Phone app. There's so much more potential when you build your own Android phone.

AmiMoJo shares a report from the BBC: Bulb smart energy users have reported their meter displays appearing in Welsh -- even though they are not in Wales. Some of the energy firm's customers said their displays were showing the text "defnydd heddiw," meaning "usage today." Fixing the problem involves navigating the menu, which also appears in Welsh. Bulb said the problem occurred with one in every 200 of its smart meters and could be resolved in five steps. One customer, James Tombs, who lives more than 100 miles from the Welsh border in West Sussex, said: "I don't live in Wales and don't know Welsh... I went on to the Bulb forums, found others with the same problem and followed directions to change [the] language." You can find instructions on how to change the display via Bulb.

Citing a report from Bloomberg, The Verge reports that Amazon is working on a mobile home robot and a high-end Echo to compete against the Apple HomePod and Google Home Max. From the report: We first heard about Amazon's plans to build a wheeled home robot in April last year. The project is reportedly codenamed "Vesta" (after the Roman goddess of the hearth), and rumors suggest it's a sort of "mobile Alexa" that's able to follow users around their homes. Today's report doesn't add significantly to this picture, but it seems Amazon is still keen to build the mobile device. It was apparently slated to launch this year but wasn't ready for mass-production. Engineers have reportedly been pulled from other projects to work on Vesta, and Gurman reports that prototypes are "waist-high and navigate with the help of an array of computer-vision cameras." They can also be summoned using voice commands.

Along with its mystery robot, Amazon is also reportedly working on a high-end Echo device that's due to be released next year. Bloomberg says the cylindrical speaker is wider than existing Echo products in order to fit in extra speaker components, and it could launch alongside a high-fidelity version of Amazon's music streaming service.

NPR reports of the various parks and recreation centers in North America that are using sonic devices to repel teens from the premises. Philadelphia, for example, has 30 parks and recreation centers that are outfitted with a small speaker called the Mosquito. "It blares a constant, high-pitched ringing noise all night long -- but one that only teenagers and young adults can hear," reports NPR. "Anyone over age 25 is supposed to be immune because, basically, their ear cells have started to die off." From the report: Philadelphia parks officials have been installing the device since 2014, reported WHYY's Billy Penn, intending to shoo rowdy youths from the premises. And it's not the only U.S. city to do so. Mosquito's Vancouver-based manufacturer Moving Sound Technologies works with roughly 20 parks departments around the country to implement the youth-repellent devices, says president Michael Gibson. It's intended to prevent loitering and vandalism by teens and young adults at public facilities. But some say this age-based targeting is a form of prejudice. Philadelphia City Council member Helen Gym refers to the devices as "sonic weapons" -- and she's working to get them removed.

[I]n Philadelphia, Parks & Recreation defends its use of the Mosquito, saying the devices are operational from 10 p.m. to 6 a.m. only, and they're just one part of an overall anti-vandalism strategy that includes fences and gates, security cameras and night watch staff. For now, the city is moving forward with installation. Despite the backlash, two new Mosquito devices are being installed at other city playgrounds as part of major renovation projects.

Samsung has been one of the only large smartphone manufacturers to insist on keeping the headphone jack in its flagship phones. But that is about to come to an end with the Galaxy Note 10. According to photos published by the FCC, showing both the bottom and top of the phone, there's no headphone jack in sight. The Verge reports: The FCC seems to have briefly shared these images by mistake. Samsung followed the usual protocols in requesting confidentiality for external photos of the Note 10 test device, and yet here we are. Whoops. There are two different models at the FCC, but neither includes 5G. So as with the S10 series, Samsung will likely produce a standalone 5G model. Aside from the headphone jack being a goner -- renders of the phone had already suggested this was coming -- we get a look at the triple-camera system on the back. There's another sensor positioned under the flash, which could be the same 3D time-of-flight depth sensor that Samsung included in the Galaxy S10 5G. The Note is usually where the company throws in everything it can, so it makes sense for it to carry over everything from the top-tier S10 model. The center-aligned front camera cutout is also faintly visible in one shot. Samsung is expected to formally announce the Note 7 at an August 7th Unpacked event in Brooklyn, New York.

The Indian Institute of Technology (IIT) Madras has released the software development kit (SDK) for its open-source Shakti processor. Shakti is based on the open-source RISC-V instruction set architecture and was funded by the Indian Ministry of Electronics and Information Technology. The institute promised that a development board will also be released soon. Tom's Hardware reports: The RISE group at IIT Madras started working on the Shakti project in 2016 with a plan to release a family of six classes of processors, each serving a different market. The group promised that the reference processors will be competitive with commercial offerings in terms of area, performance and power consumption. Now India, like China and the European Union, are showing interest in designing their own processors, rather than relying on ones designed by U.S. manufacturers. With the release of the Shakti SDK, developers can begin to develop applications for the Shakti processors, even before they're commercialized.

PolygamousRanchKid shares a report from Engadget: Samsung hasn't commented much on its decision to delay the Galaxy Fold and address design flaws, but it's opening up a little today. The company's electronics division CEO, DJ Koh, told those at a media event that he "pushed [the phone] through before it was ready." The setback was "embarrassing," he added. While Koh didn't elaborate on what happened, the statement suggests that Samsung was in a hurry to get the Fold out the door and claim some bragging rights. The Fold was supposed to arrive in late April, but early reviewers quickly discovered problems, including a display cover that was too easy to peel off and gaps that allowed debris to get behind the foldable screen. It was all too easy to break the sensitive panel -- and that would have been a problem with any phone, let alone one costing $1,980. Koh noted that Samsung had over 2,000 devices in the field and "defined all the issues," but didn't give an answer as to when the Fold might go back on sale.

Apple is manufacturing its new Mac Pro computer in China (Warning: source paywalled; alternative source), shifting abroad production of what had been its only major device assembled in the U.S. The Wall Street Journal reports: The tech giant has tapped Taiwanese contractor Quanta Computer Inc. to manufacture the $6,000 desktop computer and is ramping up production at a factory near Shanghai, the people said. Apple can save on shipping costs for components given the proximity of many of its suppliers to Shanghai, rather than having to supply a factory in the U.S. While the Mac Pro isn't one of Apple's higher-volume products, the decision on where to make it carries outsize significance. Apple's reliance on factories in China to manufacture its products has been an issue for the company, especially under President Trump, who has pressured Apple and other companies to make more in the U.S. An Apple spokesman said the new Mac Pro is designed and engineered in the U.S. and includes U.S.-made components. Apple said it supports manufacturing in 30 U.S. states and spent $60 billion last year with more than 9,000 U.S. suppliers.

"Final assembly is only one part of the manufacturing process," the spokesman said, adding that the company's investments support two million American jobs.

Apple iOS developer David Smith noticed something that really jumped out at him when he was reviewing his iPhone's device analytics. "People really, really like the 4.7-inch iPhone," he writes. "When I look at the iPhone distribution for Pedometer++ the four most popular devices are all that size. Together they account for nearly 50% of all devices I see in use." The next most popular screen sizes are the 5.5-inch Plus size (19%) and the 5.8-inch X size (12%).

There are two main reasons for why this is the case: people find the 4.7-inch display to be the perfect size, whether that be for one-handed usability or pocketability, and/or the specs and features found in the 4.7-inch iPhone models still perform well to this day, prompting users to hold off on upgrading to a larger model. Whatever the case may be, the numbers show that 4.7-inch iPhones are still very popular in 2019. Are you still using an iPhone with a 4.7-inch display? Which iPhone model is your favorite?

Apple has hired one of ARM's top chip engineers as the iPhone maker looks to expand its own chip development to more powerful devices, including the Mac, and new categories like a headset. Bloomberg reports: The company hired Mike Filippo in May for a chip architect position, according to his LinkedIn profile. At ARM, Filippo was a lead engineer behind chip designs that power the vast majority of the world's smartphones and tablets and was leading a new push into parts for computers. ARM, owned by SoftBank, designs microprocessors and licenses technology that is fundamental to the chip development efforts of Apple, Samsung, Qualcomm and Huawei.

Prior to his work at ARM, Filippo was also a key designer at chipmakers Advanced Micro Devices and Intel. For Apple, the hire could help fill the void left by the departure of Gerard Williams III earlier this year. Williams was Apple's head architect of chips used in the iPhone and iPad. Apple's A series chips power its mobile devices using ARM technology. Its Mac computers have used processors from Intel for nearly two decades.

An anonymous reader quotes a report from ZDNet: A report published this week by the NASA Office of Inspector General reveals that in April 2018 hackers breached the agency's network and stole approximately 500 MB of data related to Mars missions. The point of entry was a Raspberry Pi device that was connected to the IT network of the NASA Jet Propulsion Laboratory (JPL) without authorization or going through the proper security review. NASA described the hackers as an "advanced persistent threat," a term generally used for nation-state hacking groups.

Two days ago, Egypt's former president, Mohammed Morsi, collapsed in court during a trial and died from a sudden heart attack. Even though Morsi was the first democratically elected Egyptian president, news outlets have scrubbed that information from stories of his demise in what appears to be a government-mandated description sent out to press. The Verge reports: As noted by Mada Masr, a majority of newspapers published the same 42-word story sent to editors as a directive via WhatsApp. In the case of at least one outlet, a news anchor did that a little too well. In the clip below, the anchor can be heard wrapping her report with "sent from a Samsung device."

Morsi was elected in June 2012, though military forcibly removed him about a year later. The former president collapsed on Monday while in the midst of a courtroom hearing. The circumstances of Morsi's death have been called into question by rival regimes, including that of Turkey President Recep Tayyip Erdogan, who was aligned with Morsi during his brief rule due to both men's links to the Muslim Brotherhood. However, human rights groups have cited Morsi's deteriorating health over the years as the probable cause of this death. It's unclear why the current government, led Abdel Fattah el-Sisi, instructed news outlets to scrub Morsi's presidential history.

sciencehabit shares a report from Science Magazine: Spies may soon have another tool to carry out their shadowy missions: a new device that uses sound to "see" around corners. Previously, researchers developed gadgets that bounced light waves around corners to catch reflections and see things out of the line of sight. To see whether they could do something similar with sound, another group of scientists built a hardware prototype -- a vertical pole adorned with off-the-shelf microphones and small car speakers. The speakers emitted a series of chirps, which bounced off a nearby wall at an angle before hitting a hidden object on another wall -- a poster board cutout of the letter H. Scientists then moved their rig bit by bit, each time making more chirps, which bounced back the way they came, into the microphones. Using algorithms from seismic imaging, the system reconstructed a rough image of the letter H. The technique is years from practical application, but the authors suggest an ultrasound version might eventually be used on autonomous vehicles to detect unseen obstacles. Or it could be used to spy on your co-worker in the next cubicle.

An anonymous reader quotes a report from Wired: On Friday afternoon, the Israeli forensics firm and law enforcement contractor Cellebrite publicly announced a new version of its product known as a Universal Forensic Extraction Device or UFED, one that it's calling UFED Premium. In marketing that update, it says that the tool can now unlock any iOS device cops can lay their hands on, including those running iOS 12.3, released just a month ago. Cellebrite claims UFED Premium can extract files from many recent Android phones as well, including the Samsung Galaxy S9. No other law enforcement contractor has made such broad claims about a single product, at least not publicly. The move signals not only another step in the cat and mouse game between smartphone makers and the government-sponsored firms that seek to defeat their security, but also a more unabashedly public phase of that security face-off. "Cellebrite is proud to introduce #UFED Premium! An exclusive solution for law enforcement to unlock and extract data from all iOS and high-end Android devices," the company wrote on its Twitter feed for the UFED product. On a linked web page, the company says the new tool can pull forensic data off any iOS device dating back to iOS 7, and Android devices not just from Samsung but Huawei, LG, and Xiaomi.

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.

An anonymous reader quotes a report from ScienceAlert: A recent study has unearthed nearly 400 established treatments, devices and procedures that are no better than previous or lesser alternatives. [This is referred to as a "medical reversal" in the medical industry.] The findings are based on more than 15 years of randomized controlled trials, a type of research that aims to reduce bias when testing new treatments. Across 3,000 articles in three leading medical journals from the UK and the US, the authors found 396 reversals. While these were found in every medical discipline, cardiovascular disease was by far the most commonly represented category, at 20 percent; it was followed by preventative medicine and critical care.

Taken together, it appears that medication was the most common reversal at 33 percent; procedures came in second at 20 percent, and vitamins and supplements came in third at 13 percent. This line-up is unsurprising given the history of medical reversals that we do know about. In the late 20th century, for instance, sudden cardiac death was deemed a "world wide public health problem." Most cases were thought to arise from an irregular heart rhythm, and so a new generation of antiarrhythmic drugs were developed. "In the late 1980s, the Cardiac Antiarrhythmic Suppression Trial (CAST) was conducted to assess the safety of what was then commonplace. Interestingly, recruitment for the trial was hindered by physicians who refused to let patients undergo randomization with a 50 percent chance of not receiving these medications." In the end, however, the randomized trial found that the medication was even more deadly than a placebo. While not all of these medical reversals are deadly, they are all, by definition, useless expenses. The research has been published in the journal eLife.

MojoKid writes: AMD let loose today with a number of high profile launches at the E3 2019 Expo in Los Angeles, CA. The company disclosed its full Zen 2 Ryzen 3000 series microarchitecture, which AMD claims offers an IPC uplift of 15% generation over generation, thanks to better branch prediction, higher integer throughput, and reduced effective latency to memory. Zen 2 also significantly beefs up floating point throughput with double the FP performance of the previous generation. AMD also announced a 16-core/32-thread variant, dubbed Ryzen 3950X, that drops at $750 -- a full $950 cheaper than a similar spec 16-core Intel Core i9-9960X. On the graphics side, AMD's RDNA architecture in Navi will power the company's new Radeon RX 5700 series, which is said to offer competitive performance to NVIDIA's GeForce RTX 2070 and 2060 series. The Navi-based GPU at the heart of the upcoming Radeon RX 5700 series is manufactured on TSMC's 7nm process node and features GDDR6 memory, along with PCI Express 4.0 interface support. Versus AMD's previous generation GCN (Graphics Core Next) architecture, RDNA delivers more than 50% better performance-per-watt and 25% better overall performance. Greater than 50% of that improvement comes from architecture optimizations according to AMD; the GPU also gets a boost from its 7nm process and frequency gains. Radeon RX 5700 and 5700 XT cards will be available in market on July 7th, along with AMD Ryzen 3000 chips, but pricing hasn't been established yet for the Radeon GPUs.

An anonymous reader quotes a report from Ars Technica, written by Wired's . Andy Greenberg: In upcoming versions of iOS and macOS, the new Find My feature will broadcast Bluetooth signals from Apple devices even when they're offline, allowing nearby Apple devices to relay their location to the cloud. That should help you locate your stolen laptop even when it's sleeping in a thief's bag. And it turns out that Apple's elaborate encryption scheme is also designed not only to prevent interlopers from identifying or tracking an iDevice from its Bluetooth signal, but also to keep Apple itself from learning device locations, even as it allows you to pinpoint yours.

In a background phone call with WIRED following its keynote, Apple broke down that privacy element, explaining how its "encrypted and anonymous" system avoids leaking your location data willy nilly, even as your devices broadcast a Bluetooth signal explicitly designed to let you track your device. The solution to that paradox, it turns out, is a trick that requires you to own at least two Apple devices. Each one emits a constantly changing key that nearby Apple devices use to encrypt and upload your geolocation data, such that only the other Apple device you own possesses the key to decrypt those locations. That system would obviate the threat of marketers or other snoops tracking Apple device Bluetooth signals, allowing them to build their own histories of every user's location. In fact, Find My's cryptography goes one step further than that, denying even Apple itself the ability to learn a user's locations based on their Bluetooth beacons. That would represent a privacy improvement over Apple's older tools like Find My iPhone and Find Friends, which don't offer such safeguards against Apple learning your location.

TheFakeTimCook writes: According to an article on Apple Insider, both iOS and iPadOS 13 will contain mouse support for USB-C and Bluetooth pointing-devices, as part of the "Assistive Technology" features in those Operating Systems. "Apple confirmed both wired USB and Bluetooth mouse models will work in iOS and iPadOS, though the company has not compiled an official list of compatible devices," the report says. "That includes Apple's own Magic Mouse. Interestingly, [developer] Troughton-Smith on Monday discovered the feature works, at least unofficially, with Apple's Magic Trackpad. Apple [said] the 'foundation' of mouse support in iOS and iPadOS goes back 'a couple years.' Mouse integration can be enabled through the AssistiveTouch menu in iOS 13 and iPadOS, and will be available to users once those operating systems launch this fall."