Your garden variety motion detector uses IR, but these days, there are fancier technologies for achieving similar goals. If so desired, you can source yourself a microwave-based presence sensor ...

Residing in hall space a fair distance away from the likes of the Toyota and Sony, the automotive division of Alps Electric was demonstrating a forward-looking vehicle interface at CEATEC 2012.

Tempe, Arizona - Southwest Microwave continues aggressive expansion of its suite of INTREPID™ intelligent perimeter detection systems with the launch of the INTREPID UniZone™ Plug-and-Deploy Fence ...