| 摘要 |
Conducting payment card transactions through a networked device of a user wherein the networked device comprises a card reader and a wireless application operated by the networked device. The transaction may comprise acquiring information from a client's payment card using the card reader; providing such information from the card reader to the networked device through a headphone or similar jack; and processing the data through the mobile application connected to a payment network. More specifically, the networked device transmits a known first signal to the card reader, the card reader returns a second signal which is a function of the first signal and a third signal generated by the card reader that is indicative of information stored on a payment card, and the networked device derives the third signal from the first signal and the function applied to the first signal and the third signal. |
