Patent ID: 8781398

Claim:
A method, implemented in a first wireless communication device, for transferring a file to a second wireless communication device, where one or more processors are programmed to perform steps comprising: receiving, at a first time, an input via a touch screen interface from a user; transmitting, responsive to the input, a query to the second wireless communication device, wherein the query comprises timestamp information representing the first time and temperature information corresponding to the input; receiving, from the second wireless communication device, either a positive response or a negative response, wherein the positive response comprises an indication that a corresponding input was received at the second wireless communication device, within a predetermined time period from the first time represented by the timestamp information, via a touch screen interface on the second wireless communication device, and wherein the negative response comprises an indication that a corresponding input was not received at the second wireless communication device, within the predetermined time period from the first time represented by the timestamp information, via the touch screen interface on the second wireless communication device; if the positive response is received, transmitting the file to the second wireless communication device responsive to the positive response; and if the negative response is received, not transmitting the file to the second wireless communication device.