Leonardo’s SignalTrace adds wireless device detection to ALPR systems, raising new questions about roadside surveillance, ...

Door sensors detect door position (i.e., open or closed) based on the precise gap between the magnet and the reed switch.

When you’re driving your car, you’re probably regularly looking at the speedometer to make sure you comply with the local speed limits. The method by which it works is simple enough: ...

Falling space junk is becoming a real-world hazard, and scientists have found a clever new way to track it using instruments already listening to the Earth itself. By tapping into networks of ...

Buttons are microchips housed in small, round, metal containers, and are similar to coin cell batteries in appearance. Among ...