Patent ID: 8107400

Claim:
A method of localizing mobile client devices within a geographical area, comprising: a) having an Access Point Controller generate tokens and provide the tokens to a plurality of Access Points within a geographical area; b) having the Access Points transmit said tokens for receipt by client devices within said geographical area; c) having at least one client device within said geographical area inform the Access Point Controller of the tokens that it receives from the Access Points; and d) having the Access Point Controller determine a Macro-Location of the client device based on the tokens received by the client device; e) having the Access Point Controller generate new tokens for transmission to a plurality of computers distributed at least within the Macro-Location within said geographical area to wirelessly transmit to said client device; f) having the client device inform the Access Point Controller of the new tokens that it receives from the computers distributed within said geographical area; and g) having the Access Point Controller determine a Pico-Location of the client device based on the new tokens received by the client device.