One of the methods of detection is to upload the SSID of WIFI access points around you, including signal strengths. It's pretty easy to spot someone who knows/h

One of the methods of detection is to upload the SSID of WIFI access points around you, including signal strengths. It's pretty easy to spot someone who knows/has pulled apart the client as they usually (accidentally) refer to actions by the internal API method names instead of the UI names. :-)