| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an entrance/exit managing system further improve safety without need to perform prior distribution of bar codes. <P>SOLUTION: This entrance/exit managing system is provided with a display device 4 installed around a doorway 2 of a building 1 where entering and leaving are managed. The display device 4 generates a code key, enciphers authentication data using the code key, converts the code key and enciphered authentication data into a predetermined kind or content of bar code 3, and displays the bar code 3. The entrance/exit managing system is further provided with a portable terminal 6 constituted to download a program by communication or the like and to communicate the authentication data with the display device 4 when a passing person 5 enters the building 1. The portable terminal 6 is provided with a reader for reading the bar code 3 displayed on the display device 4, has a program for analyzing the bar code 3, to analyze the bar code 3 read by the reader, and is constituted to make a permission display if passable and to make a nonpermission display if unpassable. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
