Abstract: A user inputs identification information in a terminal, and generates identification information and bar code information about a signature program. A receiver reads the bar code information of the user using a bar code reader. The bar code reader executes a signature program, generates signature information containing the identification information of the user, and requests a certification device to verify the signature information.

Abstract: The invention solves the inconvenience that a customer would experience when his/her electronic wallet was lost or broken down. A backup condition testing means tests predefined backup conditions to determine whether to make a backup, when an electronic wallet device communicates with any other device to transfer monetary data. When the backup condition testing means has determined to make a backup, a backup data sending means sends a predetermined set of backup data collected from the electronic wallet device. A backup data management means receives the backup data from the backup data sending means and saves the received data into its backup database. In this way, the proposed system automatically saves backup data of the electronic wallet device when any backup condition is met. This mechanism permits the customer to have an alternative electronic wallet device to be promptly issued when his/her electronic wallet device is lost.

Abstract: A management method is for managing, in real time, the status of a baby-sitter dispatched based on a request from a user. When occurrence of abnormality is received from the dispatched baby-sitter, another baby-sitter is searched who is in the neighborhood of the baby-sitter from whom the occurrence of abnormality has been received, and the another baby-sitter is instructed on necessary measures to be taken. A program for managing baby-sitters allows a computer to execute an abnormality receive step which includes receiving occurrence of abnormality from a baby-sitter, and an abnormality-dealing step which includes searching another baby-sitter in the neighborhood of the baby-sitter who sent the occurrence of abnormality, and instructing the another baby-sitter to take necessary measures.

Abstract: A user inputs identification information in a terminal, and generates identification information and bar code information about a signature program. A receiver reads the bar code information of the user using a bar code reader. The bar code reader executes a signature program, generates signature information containing the identification information of the user, and requests a certification device to verify the signature information.

Abstract: A service system in an online shopping mall established through a network realizes an improvement of a service to a customer by not having to carry a magnetic card and shortening a time from issuing points to redeeming points. To attain the objects of the system, a points issuing unit issues points corresponding to the purchase amount of a customer. A points storage device stores the number of points accumulated by the customer. A points redeeming unit reduces a purchase amount of the customer as points to be redeemed. A points issue ratio and a points redeeming ratio can be set for each shop forming part of the online shopping mall.

Abstract: Each of right- and left-deflection holograms is provided for a picture element in a vertical scanning line on the screen of a display unit. For example, the right- and left-deflection hologram are alternately arranged in a single vertical scanning line. A normal image is displayed through the picture elements corresponding to the right-deflection holograms while an inverted image is obtained by rotating the normal image by 180 degrees and is displayed through the picture elements corresponding to the left-deflection holograms. Thus, the two users sitting face to face with the screen of the display device between them can see the image displayed on the screen as a normal image. In addition to the images, a pair of markers are displayed on the screen. These markers are operated by a marker operating unit which moves one marker. The other marker is moved correspondingly by the same amount of movement in the 180-degree opposite direction.