Abstract: A method of accessing an internet based service, involves using a cellular telephony device to obtain a token from the provider of the internet based service, and within the cellular telephony device, using the token to calculate a time-limited password. The time-limited password is used in combination with at least one further user identification parameter to obtain access to the internet based service.

Abstract: An electronic system providing banking services, comprises a server having a first interface for communication with user mobile telephony devices over a mobile telephone network; and a second interface for communication with an intermediary acting as a gateway to banking records of multiple banking organizations. The first interface is adapted to allow at least balance enquiry requests to be submitted to one of the multiple banking organizations by means of the intermediary and to provide at least balance enquiry replies for display on the user mobile telephony device. The invention provides the functions of the high street ATM using the mobile phone environment.

Abstract: A method of accessing an internet based service, involves using a cellular telephony device to obtain a token from the provider of the internet based service, and within the cellular telephony device, using the token to calculate a time-limited password. The time-limited password is used in combination with at least one further user identification parameter to obtain access to the internet based service.

Abstract: Methods and a system for providing a service enabling users to securely request and receive data representing details of a payment card using a mobile telephony device. The data representing details of a payment card can then be used to partake in a commercial transaction in which the user is not present at, or remotely located from, the point of transaction.