Already exists, most of them advertise via BLE so you just need to watch for their adverts: https://play.google.com/store/apps/details?id=ch.pocketpc.nearbyglas

Already exists, most of them advertise via BLE so you just need to watch for their adverts: https://play.google.com/store/apps/details?id=ch.pocketpc.nearbyglasses&hl=en_US&pli=1 https://play.google.com/store/apps/details?id=ch.pocketpc.ne...