Voice signature

The voice vault solution seems promising as more and more transactions are performed through a call center interaction and from mobile devices : customers are not willing any more to speak out loud over and over again their private details or to key in PINs they can't remember to authenticate themselves.

The concept of voice signature can bring innovative alternative ways of performing tasks that require strong authentication such as payment for instance : Voice-Pay is a start-up that is doing just that.
The solution can be hosted or integrated with existing IVR systems. More information on VoiceVault web site. You can also check out the site of another player in the field of voice boimetrics: Persay

However, this technology is a clear threat to privacy. As far as I know, only intelligence agencies had access to this kind of technology. Now every one is in "the first circle" (in reference to a famous novel).