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Path: utzoo!watmath!clyde!floyd!harpo!decvax!ucbvax!ucbcad!tektronix!ogcvax!metheus!cdi!shanks
From: shanks@cdi.UUCP (David Shanks)
Newsgroups: net.micro,net.micro.pc,net.wanted
Subject: copy protection scheme needed
Message-ID: <304@cdi.UUCP>
Date: Mon, 19-Mar-84 18:48:09 EST
Article-I.D.: cdi.304
Posted: Mon Mar 19 18:48:09 1984
Date-Received: Thu, 22-Mar-84 00:41:57 EST
Organization: Computer Development Inc, Beaverton OR
Lines: 18

<-bug food

Does anyone out there know of a good way to copy protect programs on
floppy disks?  The method must work on a variety of MS-DOS running
machines including the NEC-APC (8 inch disks) and the DEC Rainbow
(5 1/4 inch disks, single sided, quad density).  It must also be usable
in mass production and we would like to be able to allow the legitimate
users to make backup copies.

Any pointers to such a method will be greatly appreciated.

p.s.  Any method we use *MUST* be unbreakable :-)
-- 
David Shanks			..!tektronix!ogcvax!metheus!cdi!shanks
Teneron Corp.			(formerly Computer Development, Inc.)
6700 SW 105th   Suite 200
Beaverton, OR  97005
(503) 646-1599