Electronic payment method, system, and devices

摘要

A portable device authenticates a user of the portable device. If authenticity of the user is confirmed, a user ID is transmitted to a POS terminal. Upon receipt of the user ID, the POS terminal sends a request for payment including the user ID and transaction information to a payment gateway. Upon receipt of the request, the payment gateway sends an e-mail to the portable device to execute an application for payment stored in the portable device. <IMAGE>