4. The method of claim 3 wherein the voice analysis includes generation of current voice profile of the signer provided in step (i), and computerized comparison of the current voice profile against the initial voice profile provided in step (d), and stored in advance by the system at the time of the signer initially registering with the system.
4. The method of claim 3 wherein the voice analysis includes generation of current voice profile of the signer provided in step (i), and computerized comparison of the current voice profile against the initial voice profile provided in step (d), and stored in advance by the system at the time of the signer initially registering with the system. 7. The method of claim 4 wherein the current voice analysis identifies the signer based on an internal system identifier such as user ID, telephone number or MSISDN of the telecommunication terminal device of a signer.