i would love to find out how many pp are around me. Normaly i think it must be possible by Bluetooth, BLE or WIFI but i do not know what really will work?
did anybody has an idea or is there a simular project that will help me to start?
thank you so much.
PS: I search fo a way where i can figure out some kond of MAC / UUID of a Mobil Phonebecause i need to know if i know the device or not.