Article View: comp.lang.pascal.borland
Article #437Re: Copy protection schemes
From: Oz
Date: Tue, 29 Sep 1998 00:00
Date: Tue, 29 Sep 1998 00:00
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In article <6urf11$1j1$1@news3.cableinet.co.uk>, John <jps@peachworld.com> writes >Also does anyone know of any better ways to add copy protection to a program >which can be easily implemented in TP7? I realise that no copy protection >technique is perfect. I thought up one once, but never implemented it. The idea was to scratch (or dissolve) off a small patch of the mangetic surface of a floppy and format it. One can then locate the areas that have no surface and code that into each individual program. Each disk would be different of course. Then a write to those tracks and sectors followed by a read will always give a zero (or one, or whatever) for that disk, but not for a copy. I would imagine it would be hard to duplicate such damage exactly and it only requires some concealment of the r/w code and that ought to put most people off. Anyhow, one can dream. -- Oz
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 111659,b60f5ffb1998934d X-Google-Attributes: gid111659,public X-Google-Thread: 10c950,b60f5ffb1998934d X-Google-Attributes: gid10c950,public X-Google-Thread: 108ebd,b60f5ffb1998934d X-Google-Attributes: gid108ebd,public X-Google-Thread: 10cc59,b60f5ffb1998934d X-Google-Attributes: gid10cc59,public From: Oz <Oz@upthorpe.demon.co.uk> Subject: Re: Copy protection schemes Date: 1998/09/29 Message-ID: <YFoj85AAqUE2EwCn@upthorpe.demon.co.uk> X-Deja-AN: 396109390 X-NNTP-Posting-Host: upthorpe.demon.co.uk:158.152.116.64 References: <6urf11$1j1$1@news3.cableinet.co.uk> X-Complaints-To: abuse@demon.net X-Trace: news.demon.co.uk 907102910 nnrp-11:15677 NO-IDENT upthorpe.demon.co.uk:158.152.116.64 MIME-Version: 1.0 Newsgroups: comp.lang.pascal.borland,comp.lang.pascal.ansi-iso,borland.public.turbopascal,comp.lang.pascal