Patent ID: 8126398
Filing Date: 2012-02-28
Classification: G08C,H04L,H04W

Abstract:
1. An RF-capable communications device arranged to be placed in a state receptive to non-RF communications prior to an authentication process with another RF-capable communications device, comprising: a non-RF receiver arranged to receive from a first source when the RF-capable communications device is placed in a state receptive to non-RF communications a code as an audio signal, the code also being in a signal received from the first source by said other RF-capable communications device; and a processor comprising a conversion module arranged to identify formants of the received code and using the formants to seed a random number generator to produce a PIN, wherein the processor is further arranged to convert the received code from the audio signal into a PIN using the conversion module; wherein the received code is arranged for use in conjunction with the code received by said other RF-capable communications device to authenticate the RF-capable communications device with said other RF-capable communications device for RF communications.