PROXIMITY RECOGNITION SYSTEM

摘要

Disclosed is an invention for the identification of the true identity of a WLAN device that has been “cloaked” (its source address has the U/L bit set as L), by evaluating its history (recent or distant) of Probe requests for WLAN infrastructure and treating that history as part of its “fingerprint”. Disclosed also is an invention that prompts more management frames from a WLAN device that is sending broadcast Probe requests without specifying a particular network, by presenting the appearance of the presence of popular networks.

主权项

1. A method of increasing the quantity of frames sent by a WLAN mobile device that has sent a probe request, in a venue, comprising the steps of:
a) developing a list of WLAN network SSIDs that are popular in that venue; b) reading a probe request from the device; c) if the probe request is a unicast probe request for a specified network SSID, sending a probe response with the source being the value of said specified network SSID; and d) if the probe request is a broadcast probe request without a specified network SSID, sending a plurality of probe responses with respective sources being the network SSIDs from said list of popular network SSIDs.