| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new credit card-like card and an authentication system using it. <P>SOLUTION: The credit card-like card comprises a display, a two-dimensional bar code image signal formation means forming a two-dimensional bar code signal showing a two-dimensional bar code having a different content every predetermined time, and a display driver displaying, based on the two-dimensional bar code signal formed by the two-dimensional bar code signal formation means, a two-dimensional bar code on the display. In this authentication system, authentication is performed using the two-dimensional bar code displayed on the credit card-like card. <P>COPYRIGHT: (C)2007,JPO&INPIT |
