OSX, IOS and "NetworkManager"(linux) do that. Thing is that it is usually useless. Only instance where you would even send a package (thus showing your MAC) wh

OSX, IOS and "NetworkManager"(linux) do that. Thing is that it is usually useless. Only instance where you would even send a package (thus showing your MAC) when searching is if you were searching for a hidden AP. Funny that Microsoft is the only one that got that right, as they have a checkbox that says "hidden AP". All others just assume that the AP may be hidden and try to connect anyway. (worse is that they scan in the background while you are connected. NM does it at least)