Keep in mind that, unless your program is entirely server-side, you can never do this securely. The client is in the hands of enemies. This is one of the main reasons such "crippleware" has become increasingly unpopular.

There are several commercial solutions to this problem, but every one has been broken.

In reply to Re: Any method of making a perlapp a trial version? by nightwatch
in thread Any method of making a perlapp a trial version? by boat73

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