Patent ID: 6907239
Filing Date: 2005-06-14
Classification: H04M

Abstract:
1. A method for prepayment of a content, comprising the steps of: generating one or more authentication keys; providing an authentication key validity database for verifying the validity of any of the one or more generated authentication keys; delivering at least one of the one or more authentication keys to a user; informing the user of the availability of a plurality of different contents for downloading; receiving from the user over a first communications link an indication of a desired content and a request for the desired content; receiving from the user the at least one authentication key to indicate prepayment for the requested content; verifying the validity of the at least one authentication key by means of the validity database; providing the requested content to the user over a second communications link; and invalidating the at least one authentication key in the validity database in response to the providing of the requested content to the user.