A new Android application called Nearby Glasses, developed by Yves Jeanrenaud, alerts users when smart glasses are nearby by scanning for specific Bluetooth signatures. It is available on the Google Play Store and GitHub, functioning by identifying Bluetooth advertising frames from brands like Meta and Luxottica Group S.p.A. The app aims to address privacy concerns associated with smart glasses, particularly in light of reports about facial recognition technology being integrated into these devices. Jeanrenaud created the app to provide a countermeasure to surveillance technology, though he warns it may generate false positives with other devices that emit similar signals. The market for smart glasses is expanding, with companies like Google, Samsung, and Apple expected to enter the market.