Validation method and system for use in securing nomadic electronic transactions

摘要

A method involving a communication device, which comprises sending a request to a communication device; receiving a response from the communication device over a local communication path; deriving a received data set from said response; determining at least one data set that had been previously transmitted to the communication device over a wireless portion of a second communication path different from the local communication path; and validating the response based on the received data set and the at least one previously transmitted data set.

主权项

1. A method involving a communication device, comprising:
detecting a physical proximity of the communication device over a near field communication path existing between the communication device and a local device; in response to the detecting, transmitting at least one data set to the communication device over a first communication path that traverses a packet-switched network; sending a request to the communication device over the near field communication path; receiving a response from the communication device over the near field communication path; deriving a received data set from said response; validating the response based on the received data set and the at least one previously transmitted data set previously transmitted to the communication device over the first communication path; the first communication path existing between a control server and the communication device, and a second communication path existing between the local device and a processing device.