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From: hes@ecsvax.UUCP (Henry Schaffer)
Newsgroups: net.micro.mac
Subject: Re: copy protection
Message-ID: <799@ecsvax.UUCP>
Date: Sat, 23-Nov-85 18:43:28 EST
Article-I.D.: ecsvax.799
Posted: Sat Nov 23 18:43:28 1985
Date-Received: Mon, 25-Nov-85 07:12:58 EST
References: <1204@jhunix.UUCP> <763@bbnccv.UUCP> <11016@ucbvax.BERKELEY.EDU> <1002@security.UUCP>
Distribution: net
Organization: NC State Univ.
Lines: 13

> ---------
>      An ideal form of copy protection is possible if each machine has a
> serial number that is readable by software (e.g., stored in ROM).  When
> a program is sold, it comes in a form that is uncopyable, but as soon as
> it runs on a machine, two things happen: (1) it "freezes" on that machine,
> that is, it will run only on the machine with that serial number; and (2)
> it becomes copyable.
>      If the customer gets a new machine, he should be able to send the

   I have one microcomputer at work, and another at home.  I often carry 
my purchased copy of software with me to work and back.  This is a legal
use which would not be possible with this suggested type of protection.
--henry schaffer