| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve an inexpensive card reader or the like, while preventing illegal use when losing a card or the like (reducing a risk), to enhance security. <P>SOLUTION: This entrance and exit management system counts time when a user 105 holds up the card 102 over the card reader 103, at a prescribed interval, when authenticating the card 102 on the card reader 103, and makes, for example, an LED 202 turn on in every count. The count number (N) is treated as a password, and is collated with a password registered in the card reader 103, using the count number (N). A result of the authentication of the card 102 is determined in response to a result thereof, to control the access of the user. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
