A new Android app called Nearby Glasses alerts users if someone nearby is wearing smart glasses or other recording tech. Developed by hobbyist Yves Jeanrenaud, the app relies on Bluetooth signals from devices like Meta and Snap products. Inspired by growing privacy concerns, Jeanrenaud described the app as a "desperate act of resistance." While it may have some false positives, users can customize the app to detect various devices, contributing to a dialogue around consent in surveillance technology.