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A new bioelectronic device has been created that receives energy from a person. Technology is based on magnetism, not electricity

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Scientists at the University of California at Los Angeles have created a soft and flexible self-powered bioelectronic device. The flexible device can receive the energy it needs to operate from human body movements such as bending an elbow or wrist. The researchers found that the magnetoelastic effect, which creates a charge when small magnets move together under mechanical pressure, occurs in a soft and flexible system, not just a rigid system.

The team created a concept device using microscopic magnets in a paper-thin silicon matrix. The magnetic field changes in strength as the matrix moves, generating electricity. The researchers believe their device can be used to power a range of wearable and implantable electronic sensors for health monitoring.

One of the unique aspects of the technology is that it is based on magnetism, not electricity, so moisture and sweat does not compromise its effectiveness. The team created a flexible device that was attached to the study participant’s elbow with silicone tape.

The researchers found that the magnetoelastic effect is four times that of any rigid system of the same size. The test system was capable of generating 4.27 milliamps per square centimeter. The device created by the researchers was so sensitive that it could generate energy from human pulse waves.

This will theoretically make it possible to create a waterproof self-powered heart rate monitor and many other interesting devices.

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Gaming

The first trailer for Grand Theft Auto: The Trilogy – The Definitive Edition shows how the graphics have changed. The game will be released on November 11

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The Grand Theft Auto: The Trilogy – The Definitive Edition trilogy, announced earlier this month, has received a release date.

The game will be released digitally on all major platforms except mobile on November 11th. As a reminder, it will be available on PlayStation 5, PlayStation 4, Xbox Series, Xbox One, Nintendo Switch and Rockstar Games Launcher on PC. For Android and iOS, games will be released next year. As for the disc version, it will be released on December 7th. In addition, on the same day, the project will appear on the PlayStation Now platform.

Rockstar also published the first trailer for the updated trilogy, where, among other things, the difference in the level of graphics is clearly visible. The angular old models have not gone anywhere, but now they are much more detailed, and the effects of reflections look very modern at all. By the way, the game will support Nvidia DLSS, although it’s not very clear whether it needs this technology with very modest system requirements.

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Security

Scientists have learned to track gadgets using BLE signals

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Devices can be tracked by prints of their physical characteristics.

In the past few years, mobile devices have become more likely to use the Bluetooth Low Energy (BLE) protocol to transfer messages, which can pose a significant privacy risk, experts at UC San Diego warn.

Within the framework of research they examined the implementation of BLE in a number of popular models of smartphones, laptops and gadgets and found that devices can be traced back to their physical characteristics. The bottom line is that devices can have a unique fingerprint that can be used to determine where they were and when.

BLE messaging has become more common in phones, laptops, smartwatches and other gadgets due to the support of operating devices for functions such as Apple Continuity or Find My, which imply the use of the BLE standard.

Typically, applications using this protocol try to hide identifiable data by encrypting the device’s MAC address, but this does not help to hide the built-in hardware characteristics of the device, based on which it can be identified.

Experts have tested their theory on several devices, including the iPhone 10, Thinkpad X1 Carbon (Windows), MacBook Pro 2016 (macOS), Apple Watch 4 (watchOS), Google Pixel 5 (Android), and Bose QuietComfort 35. In most cases, they were able to get a fingerprint of the physical BLE chip and distinguish one device from another.

In the course of the study, the scientists faced some difficulties, for example, it turned out to be more difficult to distinguish devices operating on the same chipset model than to distinguish gadgets based on different chips. The device’s ability to identify was also influenced by its temperature and signal transmission power.

Using special equipment, the researchers intercepted BLE signals from 162 devices in public places and were able to identify 40% of them. In addition, the group recorded BLE signals from bystanders’ devices with COVID-19 tracking apps from Apple and Google for two days for 10 hours. Scientists managed to “uniquely identify” 47.1% of 647 MAC addresses.

In theory, the method can be used to track the Apple AirTag and Samsung SmartTag Plus Bluetooth trackers, the researchers noted.

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Components

The new Intel processors are likely to be more expensive than their predecessors. There are already prices for two new models in the US

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It looks like the new Intel processors will significantly raise the price bar. A large American network MicroCenter has already added a couple of new Alder Lake generation products to its range.

The Core i7-12700K is priced at $ 470, while the top-end Core i9-12900K will cost $ 670. For comparison, the Core i9-11900K has a MSRP of $ 550, and Intel’s flagship model has always cost about the same for many years.

Of course, there hasn’t been an official announcement yet, so we don’t know the recommended prices. But today we have already seen an example from Germany, where the price was also above $ 600.

The new Intel processors are likely to be more expensive than their predecessors.  There are already prices for two new models in the US

At the same time, it is hardly worth blaming Intel for such a pricing policy. First, the new CPUs will be much more efficient than their predecessors. And secondly, the same Ryzen 5000 is also not cheap, and it is not yet clear if the Ryzen 9 5950X will be able to withstand in comparison with the new flagship of Intel.

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