Abstract: An authentication method for a telecommunications system comprising a computer network and a telephone network that includes receiving, at an Authentication System across the computer network, data indicative of an authentication request. The request is typically made by a provider in connection with a user (e.g. by a provider to obtain authentication from a user as the result of an authentication trigger detected by a provider system). A telephone call is establishing by the telephone network between the Authentication System and a telephone device with a telephone number associated with the user. A PIN is received from the user at the Authentication System during the telephone call. It is then determined if the received PIN is valid. The authentication request is authenticated if the PIN is determined to be valid.

Abstract: An authentication method for a telecommunications system comprising a computer network and a telephone network that includes receiving, at an Authentication System across the computer network, data indicative of an authentication request. The request is typically made by a provider in connection with a user (e.g. by a provider to obtain authentication from a user as the result of an authentication trigger detected by a provider system). A telephone call is establishing by the telephone network between the Authentication System and a telephone device with a telephone number associated with the user. A PIN is received from the user at the Authentication System during the telephone call. It is then determined if the received PIN is valid. The authentication request is authenticated if the PIN is determined to be valid.

Abstract: 1.1. Phone and PIN enables any unmodified telephone to act as a secure PIN (Personal Identification Number) entry means any remote Computer or Business Information System can use to authenticate the identity of any person or to obtain validation for any transaction purportedly made by any person. There are many instances when Business Information Systems or individuals may wish to immediately confirm the accuracy, validity or authenticity of the identity of any person or confirm the accuracy, validity or authenticity of a transaction any person has, is about to or which they intend to present. This need often arises in the normal course of business and particularly when persons transact business on the Internet. Phone and PIN provides an automated means for such authentication to be obtained. The person to be called has a PIN number associated with their telephone, which is known to them.