Software protection with real time clock

[coolraj]

I'm trying get a secure real time clock information for licensing purposes ,I tried hardware dongle like hasp4 with RTC but I was not able not interface the dll and kept coming up with errors.Can anyone suggest a better of getting real time clock information or any available product which I can use.
I even thought of using the system clock but it's doddle to reset the system time.
Help is much appreciated.Thanks in advance
Rajan

[SimonS]

One possibility might be to force the computer to access an external time server of your choice and check the time from there.

This example shows how to read the time from a NTP server using LabVIEW.