Method for providing a trail period on a program

[Dang Griffith]

On Thu, 1 Apr 2004 17:46:12 -0600, "Larry Bates"
<lbates at swamisoft.com> wrote:

>I'm searching for a good way to provide a "trail
>period" (something like 90 days) for a commercial
>application that I'm writing.  I'd like something
>that can easily stop working 90 days after
>installation.  Can anyone point me to something
>that exists already?

Look at http://www.macrovision.com/, formerly (or now owner of)
GlobeTrotter Software.  It's pretty easy to use, and you can 
set it up so users can "activate" their temporary
copy without having to get a new copy of the software.
    --dang