A system and method for allowing client computers to access data or processing on remote computers without requiring the remote computer's recognition of the client computer. An authorizing computer provides client computers with a data specification and remote computer address along with an authorization code that may only be used for a limited number of times. A client computer then accesses the remote computer to access secure data. The authorization codes of the example embodiment are stored on the authorizing computer and the remote computer and simple look up and comparison is used to validate the authorization code on the remote computer.