| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus, a method and a program for recording transactions with a portable logging device. SOLUTION: A first log stored on a first portable device and a second log associated with a second device are examined; and it is determined that the portable device has interacted with the second device based on one or more entries in the first and second logs. COPYRIGHT: (C)2009,JPO&INPIT |
