This article was updated and checked for accuracy in April 2024. It was originally published in 2021. Believe it or not, metal detection is actually possible on Android phones. In fact, the first ...

[mircemk] is quite a wizard when it comes to using coils of wires in projects, especially when their application is within easy-to-build metal detectors. There are all kinds of ways to send signals ...

Turning off cellphones or even locking them in metal boxes won’t be enough to keep them hidden with a new phone detector introduced on Monday. The Manta Ray, made by Berkeley Varitronics Systems, can ...