System and method for valid period control
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United States of America Patent
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N/A
Issued Date -
Feb 26, 2009
app pub date -
Aug 1, 2008
filing date -
Aug 23, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A system for valid period control, comprising: a user device and a paid service server. The user device comprises a device identification code; the paid service server accepts the device identification code; assigns an expiry date according to the device identification code, and then encrypts and sends the device identification code and the expiry date back to the user device. The paid service server of the system for valid period control may be located at a provider of paid services for securities, thus allowing the provider of paid services for securities to manage expiry dates of users independently, and does not require assistance from a securities information service provider.
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