Abstract: A reliability extracting section extracts the reliability of positioning at a person's position calculator on the basis of an image captured from an imaging section. A section that creates a possibly-existing area determines a possibly-existing area on the basis of the result of positioning obtained by the person's position calculator and reliability (precision of positioning) obtained by the reliability extracting section. An entry determining section determines entering and/or leaving to/from a targeted monitored area on the basis of the overlapping of the possibly-existing area with the monitored area.

Abstract: A reliability extracting section (102) extracts the reliability of positioning at a person's position calculating section (101) on the basis of an image captured from an imaging section (121). A section (104) for creating a possibly-existing area determines a possibly-existing area (AR1) on the basis of the result of positioning obtained by the person's position calculating section (101) and reliability (precision of positioning) obtained by the reliability extracting section (102). An entry determining section (105) determines entering and/or leaving to/from a targeted monitored area (AR0) on the basis of the overlapping of the possibly-existing area (AR1) with the monitored area (AR0).

Abstract: A license information table 421a in a license DB 42a of a license management center terminal device 4a memorizes license information that includes an expiration date and identifies details of a license per content of each user. A license information examination unit 47 calculates remaining time up to the expiration date per license information of each user based on the expiration date and the date and hour at that moment. A notice information preparation unit 46a generates notice information indicating that the expiration date is close at hand when the remaining time calculated by the license information examination unit 47 becomes a predetermined threshold value or less.

Abstract: A terminal (140) attaches a client ID and a whole or a part of LT to a backup request and sends them to a right management server (710). A right management server (710) verifies the client ID to see when the entity originating the request is an registered user, and it also verifies data identification ID on the LT to see when right data is the one issued by the server for the registered user, and then performs backup for the right data when the right data is the one issued by the server. The terminal (140) attaches the client ID to a restoration request and sends them to the right management server (710). The right management server (710) checks a user ID from the client ID, and then restores the right data to the terminal (140), which is backed-up in association with the user ID.