If you’re already worried about ads tracking your online whereabouts, here’s a new thing to freak out over: cross-device tracking that communicates using high-pitched audio frequencies. As reported by ...

UPS announced this week that it has rolled out a new tracking system called radio frequency identification, or RFID, across its entire U.S. small package network, including delivery trucks, sorting ...

Researchers develop battery-free 3D-printed metal tags for smart tracking ...

Ferroelectrics found extensive uses in industrial applications because of their unparalleled electromechanical and electrical characteristics, for example, as actuators, sensors and capacitors [1], [2 ...