Nearby Glasses is a free Android app that scans nearby Bluetooth headers for certain manufacturer codes and warns you when "smart glasses" are nearby. https://github.com/yjeanrenaud/yj_nearbyglasses
GitHub - yjeanrenaud/yj_nearbyglasses: attempting to detect smart glasses nearby and warn you

attempting to detect smart glasses nearby and warn you - yjeanrenaud/yj_nearbyglasses

GitHub
@brucelawson Recommended it to my corporate IT, since we restrict phones (for security against photos - but no current policy on 'smart' glassholes)