Patent ID: 7426271

Claim:
A method for establishing a secondary communication channel between at least two computing devices over a network medium, comprising: connecting a first computing device with a first telephonic unit over a primary low-bandwidth channel, wherein said primary low-bandwidth channel is a location-limited channel with the following properties: human operators can control which devices are communicating with each other, transmission is physically limited, pre-authentication information is authentic, eavesdropping is possible, but information injection can be detected by communicating parties, and eavesdroppers on the location-limited channel are not able to create connections with the secondary communication channel; connecting a second computing device with a second telephonic unit; determining whether said first telephonic unit is in communication over said primary low-bandwidth channel with said second telephonic unit; transmitting a network address of said first computing device to said second computing device over said primary low-bandwidth channel, wherein the second computing device does not have knowledge of the first computing device's network address prior to the transmission; and creating a one-to-one secondary communication channel between said second computing device and said first computing device through the Internet.