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Using the license start date to improve protection against over-usage and clock tampering
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Article ID: 273

Last Updated: 01st December 2010 11:54:24 am

You can set the starting date that your application is available for checkout by using the START setting in your XML license template file. By combining the START and END date settings (for example, <SETTING START="2010-09-01"/> and <SETTING END="2011-09-01"/>), you can specify the exact period of time that the license is active.

In this way, you can distribute the license far earlier than the start date without risk of over-usage. Setting the start date in a license you distribute earlier than the start date also helps you avoid any possible issues with users turning the clock back before their first use of the license. The system clock tampering will be detected immediately and the license will not be available for checkout until the clock is set to the proper date.

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