Voice verification — Authenticating remote users over the telephone
Andrew Shaw · Network Security · 1997
The scale of business conducted over the telephone continues to rise. The early adopters were banks, driven by the need to reduce the volumes of business conducted through a costly branch network. Increasingly the switch to the telephone for dealing with the water company, the insurance company, mail-order retailing companies, is being driven by customers who find the phone more convenient than pen and paper.