Best ways to solve Date time license issue [closed]

Answer 1

Probably the best possible solution would be to have an online server for verification of the licensing details. If you let your application be dependant over client machine's data then there is always a chance that they will break it. But for that your client must have internet access

Answer 2

As per your requirement, what I see, you cannot check the online server for date. This is quite obvious for offline system.

So, you need to do few things -

1. set the registration date and expirydate in the form of high encypted data and save it somewhere in registry database.

2. While the Application opens each time, get the latest clock date and save the encrypted data in registry.

3. Ensure to check the Clock date and the Last Usage Date. If last usagedate < clockdate, then everything fine but if usagedate>clockdate, user has changed the clock date. So, don't update the registry.

4. Once the lastusagedate reaches the expiry date, pops a message "Your Trial has been expired.".

Hope this helps.

cheers