“Battery-free, quiet, and inherently private” — These 3D-printed metal tags could be the future of home and office tracking as the tiny penny-sized discs turn ordinary objects into smart devices — ultrasonic tech does permanent maintenance-free monitoring without any need for charging

Likely AI

tech.yahoo.comby Wayne WilliamsApril 28, 2026Submitted May 7, 2026

When you buy through links on our articles, Future and its syndication partners may earn a commission.Credit: Georgia TechBattery-free metal tags generate ultrasonic signals when objects move nearbyDifferent...

The Verdict

ClassificationLikely AI

ConfidenceHigh confidence

Analyzedtext, image

ImageAI Generated

Community Verdict

Be the first to vote on this assessment.

Embed Badge

Add this badge to your site to show the AI classification for this content.

[![Real Press](https://real.press/api/badge/ad9b89c9-fcd3-418b-9b39-9aaddbecd02a)](https://real.press/content/ad9b89c9-fcd3-418b-9b39-9aaddbecd02a)