System and method for proving physical presence

A system, comprising:

• a server;
• a first wireless location transmitting device transmitting a first location identification token;
• a second wireless location transmitting device transmitting a second location identification token;
• and
• a portable computerized device having computer-executable instructions, said portable computerized device comprising:
• a memory,
• a wireless receiver simultaneously receiving said first location identification token from said first wireless location transmitting device and said second location identification token from said second wireless location transmitting device while said portable computerized device is within a predetermined distance from a designated location,
• a processor operatively connected to said wireless receiver, said processor storing said first location identification token and said second location identification token in said memory, and
• a communications device operatively connected to said processor;
• said computer-executable instructions causing:
• said processor to automatically obtain a previously stored location signature associated with said first location identification token and said second location identification token from a non-transitory computer readable storage medium, using said communications device,
• said processor to automatically calculate a current location signature based on said first location identification token and said second location identification token,
• said processor to automatically compare said current location signature with said previously stored location signature to determine a similarity measure of said current location signature and said previously stored location signature, and
• said processor to transmit said first location identification token, said second location identification token and said current location signature to said server, using said communications device, as proof of presence of said portable computerized device at said designated location.

A method comprising:

• receiving a first location identification token from a first location transmitting device, using a wireless receiver of a portable computerized device, while said portable computerized device is within a predetermined distance from a designated location;
• simultaneously receiving a second location identification token from a second location transmitting device, using said wireless receiver of said portable computerized device;
• automatically calculating a current location signature based on said first location identification token and said second location identification token;
• automatically obtaining a previously stored location signature associated with said first location identification token and said second location identification token from a non-transitory computer readable storage medium, using a communications device of said portable computerized device;
• automatically comparing said current location signature with said previously stored location signature to determine a similarity measure of said current location signature and said previously stored location signature;
• automatically storing said first location identification token, said second location identification token, and said current location signature in a memory of said portable computerized device;
• transmitting said first location identification token, said second location identification token, and said current location signature to a server, using said portable computerized device;
• and
• verifying presence of said portable computerized device at said designated location based on said first location identification token, said second location identification token, and said current location signature.