| US 7,600,670 B2 | ||
| Compact protocol and solution for substantially offline messaging between portable consumer device and base device | ||
| Patrick Gauthier, Mountain View, Calif. (US); Ayman Hammad, Pleasanton, Calif. (US); and Roger Merckling, Palo Alto, Calif. (US) | ||
| Assigned to Visa U.S.A. Inc., San Francisco, Calif. (US) | ||
| Filed on Oct. 19, 2006, as Appl. No. 11/584,715. | ||
| Application 11/584715 is a continuation of application No. 11/491551, filed on Jul. 20, 2006. | ||
| Application 11/491551 is a continuation of application No. 10/990289, filed on Nov. 15, 2004, granted, now 7,152,780. | ||
| Application 10/990289 is a continuation of application No. 10/244044, filed on Sep. 13, 2002, granted, now 6,837,425. | ||
| Prior Publication US 2007/0057034 A1, Mar. 15, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 17/00 (2006.01) | ||
| U.S. Cl. 235—375 | 18 Claims |
| 1. A method comprising:
receiving a message code associated with a reward at a base device, wherein the message code is received from a portable payment
device;
analyzing the message code;
generating a message using the message code using a dictionary associated with the base device; and
sending an updated message code from the base device to the portable payment device.
|