Researchers build a $7 smartphone clip-on that spots hidden cameras — AI and dynamic LED grid deliver 94% accuracy

This gadget only costs $7 but can help your catch hidden cameras through the use of the companion AI app that installs on your phone. It works by changing the location of the LED light source to compare different reflections and determine if it's a hidden camera or not.

Original reporting by Tom's Hardware · Jowi Morales. GridIndex is an aggregation and intelligence layer — full credit to the original publisher.