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Re: Protecting Software w/ Software License Keys...
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Re: Protecting Software w/ Software License Keys...


  • Subject: Re: Protecting Software w/ Software License Keys...
  • From: "Erik J. Barzeski" <email@hidden>
  • Date: Sat, 15 Jun 2002 19:06:43 -0400

On 6/15/02 6:50pm, Chris Hanson <email@hidden> wrote:
> At 5:24 PM -0400 6/15/02, Erik J. Barzeski wrote:
>> It allows the same user to move the app to a new computer: the math is
>> simply done using the new MAC the first time they launch and then enter
>> their license code, name, email, etc. A user copying his prefs from one
>> machine to another will have to re-enter the code every time... But who
>> copies their prefs that frequently from one machine to another? Nobody...
>
> Your scheme limits your application to only one user on a machine.

Good. :) Nothing wrong with that, and the code is easily transferred by the
same user to another of his machines (his laptop or whatever).

> It sounds like it will also have problems in a lab or enterprise
> setting where user home directories are on a server and users can log
> in on any of a number of machines.

And how many of those are there that I've got to worry about? My guess is
"nearly zero." (the key being "that I've got to worry about).

If the problem arises I'll fix it. But I don't suspect that it will.

Every case is unique, however, so to anyone else: consider this when
designing _your_ license key source code... I did and simply decided it
wasn't worth considering (in my case).


--
Best wishes,
Erik J. Barzeski

When choosing between two evils, I like to
choose the one I've never done before.
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