Third party involvement method for transaction communicated over computer network, uses personal access code sent to providers to allow access to purchaser request and uses this code to validate provider with third parties

摘要

The transaction system has a server (6) that matches provider prices (3,4,5) to purchaser requests (2). The server stores the call for offers and transmits to the computers of providers a personal code to allow them access to the offer request. The reply from providers is memorized, along with a third party (11) to the transaction. The personal code validates the provider with the third party.