Re: protecting time-limited demos
Re: protecting time-limited demos
- Subject: Re: protecting time-limited demos
- From: Jason Deraleau <email@hidden>
- Date: Thu, 17 Apr 2003 12:56:26 -0400
How does one protect a time-limited demo? I've seen discussions here
about protecting licensed software but not demos. I am far from a
licensing guru (hence the problem) but I see various schemes:
1) Somehow the time (or usage count) is hidden on the hard drive (?) -
best I can guess. This solution is protected better than the
Presidential football codes.
2) The demo customer gets a free trial license after install. How
does that work?
I'm not looking for a solution "on the cheap." I'm willing to
purchase, within reason, whatever solution or expertise that will
solve this problem. I've looked at some postings here about modifying
a file size in the bundle to keep up with launch counts. But all you
need to do to defeat this is re-install the app. (I visualize keeping
the .sit file on the desktop and re-installing after the demo lapses.)
If this is not the forum for this, could some kind soul point me to
the place that is. I've been to the end of the internet and have
found nothing.
Thanks in advance,
Ron
email@hidden
O'Reilly's MacDevCenter has a set of three articles by Sanford Selznick
[
http://www.oreillynet.com/pub/au/1034] about "The Do's and Don'ts of
Shareware." You'll probably get some good work out of fprefect's
article
[
http://www.ambrosiasw.com/cgi-bin/ubb/
newsdisplay.cgi?action=topics&number=14&article=000052] on piracy that
discusses theory of expiring registration keys.
Have fun!
--
Jason Deraleau (email@hidden)
Homepage:
http://www.lifehertz.com
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