💻 ** 'Battery-free, quiet, and inherently private' — These 3D-printed metal tags could change home and office tracking, turning penny-sized discs into smart devices using ultrasonic tech for maintenance-free monitoring without charging **

Researchers at Georgia Tech develop battery-free 3D-printed metal tags for smart tracking that use ultrasonic sound to record everyday actions.

🔗 https://www.techradar.com/pro/battery-free-quiet-and-inherently-private-these-3d-printed-metal-tags-could-change-home-and-office-tracking-turning-penny-sized-discs-into-smart-devices-using-ultrasonic-tech-for-maintenance-free-monitoring-without-charging

#tech #news