Is it possible, with a normal wifi adapter, to detect present wifi devices in the surrounding? Let's say, is it possible to detect an Iphone with wifi switched on in the range of my wifi adapter?
Perhaps it's possible to create a fake AP with an ESSID and encryption thats stored in the favorites list of the device that should be detected, but actually I am searching for a more generic way, without knowing the favorite networks.
Also, I remember I had found special hardware once for this purpose, but again, I am looking for a method where standard hardware can be utilized.