time limited demo

Monte Goulding monte at sweattechnologies.com
Wed Oct 2 05:33:01 EDT 2002


Watch out that the user doesn't put the date back on their computer. Then
they get an unlimited free license. There are people around that also have
dates pre-2000 because of code that was never fixed.

Monte
>
> Ages ago I asked if there was any way to set up a time limited standalone
> demo without using an external file.  Phil Jimmieson contacted me
> off list to
> suggest I obtain the date created from the 'detailed files'.  I
> finally tried
> it and it works fine - thanks Phil.  All you do is, in an
> openstack handler
> in the splashscreen/standalone, find the line of the detailed
> files relating
> to the standalone itself.  Item 4 is the date created.  Work out the days
> elapsed and bobs your uncle.  I now have a 10 day demo and a 12
> month license
> version, each with a 7 day countdown to expiry reminder to pay me
> some money.
>
> The nice thing is you don't have to set the expiry everytime you
> build, or
> worry about a secret file somewhere.  The bad thing is that you
> need to build
> for each customer.  Since I produce very small numbers and build for each
> copy anyway, this is no problem.
>
> Of course, users could set back the clock on their machine, but I
> timestamp
> all output which in forensic assessment (which is what I do)
> would render a
> false date serious professional misconduct - much more scary than
> unauthorised use of software.
>
> The script would be a breeze for all the scripting gurus out
> there, but if
> any apprentice gurus want to take a look at the script, contact
> me off list -
> it has a couple of twists I didn't mention above.
>
>
> Best wishes,
>
> David Glasgow
> Home/ forensic assessments --> <A
> HREF="http://members.aol.com/dvglasgow/">
> DVGlasgow </A>
> Courses --> <A HREF="http://www.i-Psych.co.uk">i-Psych</A>
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