FBI headquarters in Washington DC Shutterstock/Bob Korn
The US Federal Bureau of Investigation (FBI) plans to buy radar technology that can detect people on the other side of walls, whether they are moving around, standing still or even lying down. The technology could be used to find people trapped in disaster wreckage, for example, or locate individuals evading law enforcement.
The idea of using radar – a system that uses radio waves reflecting off objects to determine their location – in this way has been around for at least 20 to 30 years, says Hugh Griffiths at University College London. But…
