Fortunately, a Supreme Court decision (5-4) ruled that the scanner constituted an illegal search under the Fourth Amendment, requiring a warrant that the police did not obtain.
A point for privacy, but the government is about to have a much more controversial and dangerous tool for monitoring what's going on inside your home.
Unlike the thermal camera, this device is already in your home – and you put it there.
How does it work?
WiFi consists of electromagnetic waves in the 2,4 and 5 GHz ranges. It's the same as the light you see, except it can penetrate walls thanks to its much longer wavelength. Much like light (and echolocation), these waves also reflect off various surfaces and, when correctly reconstructed, can be used to create an image.
The best way to do this is through an Ethernet cable. But when it comes to communicating from Earth with a robot that is to land on Mars, it's not the same story at all. Until proven otherwise, wifi is not accessible in space and even less so on Mars. But maybe a randomized double-blind study and three paraplegics claim that wifi has been available without any side effects since the mid-18th century. It is true that I am not aware of all the technological advances that have been revealed to us in dribs and drabs for 3 years now thanks to the hucksters of the presstitute.
Still, that doesn't solve the problem of wireless communication from Earth to Mars. At regular intervals we receive images taken from the Martian soil by explorer robots which have traveled millions of kilometers, wisely avoiding the asteroid belt populated by large stones which could destroy them on the spot. But we have to believe that the robots sent on a mission are trained to dodge cosmic limestone projected with phenomenal power. It is a skill. Useless on Earth, but for space travel it is one of the sinequanone conditions if we want to arrive whole on the red planet.
It is completely implausible that a robot could cross the asteroid belt unhindered. Obviously I already hear that space is big, the asteroid belt is not homogeneous, gigantic spaces exist between the stones. Because they are stones dear friends, know it. And as everyone knows a rolling stone gathers no moss. It has absolutely nothing to do with the subject, but the expression exists, let's use it. Thus, the robots easily avoid this zone of turbulence. But how do they communicate during their journey through space with the engineers on Earth?
Researchers at Carnegie Mellon University have developed a method to detect the three-dimensional shape and movements of human bodies in a room, using only Wi-Fi routers. The scientists say they don't need camera or LiDAR sensor. The research report says they instead used a system called DensePose that maps all of the pixels on the surface of a human body into a photo. Interestingly, researchers at Carnegie Mellon University claim that this invention is actually progress for the right to privacy.
Privacy-conscious people may soon feel the need to turn their home into a Better Call Saul-style Faraday cage to feel safe. A team of researchers from Carnegie Mellon University in Pittsburgh, USA, has designed a system that can "see" the shapes and movements of people in a room based on Wi-Fi signals. To do so, they used DensePose, a system for mapping every pixel on the surface of a human body into a photo. DensePose was developed by London-based researchers and AI researchers at Facebook.
From there, they developed a deep neural network that matches the phase and amplitude of Wi-Fi signals sent and received by routers to coordinates on the human body. The scientists published a preliminary paper on their findings on the journal arXiv last month. This is because Wi-Fi routers constantly broadcast radio frequencies that your phones, tablets, computers, and other electronic devices pick up and use to get you online. As they move, these frequencies invisible to the naked eye bounce or pass through everything around them, walls, furniture and even you.