Copy protection for DVD-ROM
Peter Bogdanoff
This has been discussed in the past, but it's been long time.
I have a iShell project on DVD-ROM that will be sold in China and need to add some form of disc copy projection.
These are DVD-Rs, so I'm thinking a home-grown solution using an online database of serial numbers that allow 1 or 2 installations.
Does anyone have any insights about this?
Peter Bogdanoff
(310) 825-8494
UCLA School of the Arts and Architecture
240 Charles Young Drive N
Broad Art Center 2275
Los Angeles, CA 90095
Denis Williamson
I've had a similar situation in Hong Kong, but on a very small scale (one thinks China is going to be large-scale) where an online check tied a user name with a serial number - the user chose the name on the first installation, so I think your serial number approach will give you enough data to decide on what action to take.
In my case we had no restrictions on the number of installations. As a user, I rather disapprove of such limits as one can change OS's, change machines and have total crashes, all of which could require reinstallation. (And to allow extra installations you need a continual presence to respond to user requests for more.)
If someone takes your program, copies it and sells it with the serial number - which is more than likely - then if you're counting the number of installations, and if one serial number suddenly rockets, you'd know that, and (maybe) could do something about it (block that number?).
Probably, you'd want to see how the product sells and how much it is copied, and judge whether the number are significant enough to warrant aggressive protection. Bearing in mind that copying is endemic in China (if not everywhere) there will be some, but if it's worth constraining your legitimate users' experience to stop the copying, is something you'll no doubt work out yourself.
Good luck with the project.
Denis Williamson
Hong Kong
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