Can I write a builtin Clock in my standalone application exe file?

Dear All,

I am using the datetime to control the days the users can use our standalone application code. But I found a flaw of this approach: the user change his computer date and time, then my code will not have any use-time limit.

I am wondering if anybody knows how to solve this problem. Can I write a builtin clock in my code to control the datetime on my own?

Thanks a lot.

Benson

Answer 1

[Rik]

Host the UTC timestamp on your server and then use a function to retrieve it. That way you have a known correct date to verify your licenses with. ( the NIST has a page that displays the UTC, it used to be possible to retrieve the timestamp through Matlab, but they blocked it due to large amounts of trafic that attracted )

If you want offline protection as well, I don't think you will be able to do it, even if you track total use time.