| 摘要 |
The present invention provides an expiration date monitoring system capable of monitoring an expiration date of a terminal by an effective method. According to an expiration date monitoring system comprising a terminal and a server for monitoring an expiration date of this terminal, the server monitors the expiration date for each terminal, for each function of the terminal and for each content. The terminal receives a renewal command of the expiration date from the server and stores the renewed expiration date of each function. Then, the terminal can activate the terminal itself, each function of the terminal and the access to the content when the current date (current time) is within the expiration date thereof. Alternatively, as a part of the monitoring of the expiration date, it is possible to secure a communication opportunity of making an access from a terminal side to a server side, so that it becomes possible that the server collects the data of the terminal by the use of this opportunity or the necessary software is transferred from the server to the terminal.
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