Wireless Payment with a Portable Device

摘要

A portable device receives an account information request signal from a merchant machine. The portable device transmits a response message to the merchant machine. The response message comprises the account information for a purchase. The portable device transmits a first message to an account server. The first message comprises a request to get information comprising the purchase amount. The portable device receives a second message comprising the information from the account server. The portable device sends the purchase amount to a display.