Patent ID: 7136836

Claim:
An accounting and reconciliation system comprising: a seller terminal for a seller; a buyer terminal for a buyer, the buyer terminal sending purchase request data including purchase transaction information which specifies purchase transaction conditions for a product or service; an account reconciliation server which guarantees account reconciliation in purchase transactions between the buyer and the seller of the product or service, the reconciliation unit comprising: communication circuitry for establishing communications with each of the buyer terminal and the seller terminal; credit data creating means for (a) creating, based on the purchase request data received from the buyer terminal, credit data including information which specifies purchase transaction conditions for the product or service, and (b) sending the credit data created to the seller terminal, the credit data guaranteeing payment to the seller by the account reconciliation server for the product or service; credit data storing means for storing the credit data; data comparing means for comparing the stored credit data with acknowledgment data received from the buyer terminal, the acknowledgment data (a) being issued by the buyer terminal when the buyer receives from the seller the product or service, and (b) indicating a product or service delivered from the seller to the buyer; and paying means for making payment for the product or service to the seller terminal when the content of the acknowledgment data satisfies the purchase transaction conditions described in the stored credit data.