Re: protecting time-limited demos
Re: protecting time-limited demos
- Subject: Re: protecting time-limited demos
- From: Ron Phillips <email@hidden>
- Date: Thu, 17 Apr 2003 13:33:07 -0500
Thanks, Jason. Got them and have read through them. What's missing is
the mechanics behind it.
Regards,
Ron
On Thursday, April 17, 2003, at 11:56 AM, Jason Deraleau wrote:
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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