ZINC lets you get the machineID of the computer you are running on in one
call. We match this against an expected machineID written to a licence file
during installation. (The licence file has a checksum). If they don't
match, then you can catch it. If you are only selling the application once,
or limited times, and can do the installation yourself this should be a
pretty good casual protection. If you are selling lots, then you have to
add an additional way to stop the installation being run more than once.
And so the layers start going on!
Adrian
==========================
Choose Clarity for effective, enjoyable, easy-to-use ELT software.
Dr Adrian Raper, Technical Director
Clarity Language Consultants Ltd (UK and Hong Kong)
http://www.clarity.com.hk
PO Box 163, Sai Kung, Hong Kong
Tel: (+852) 2791 1787, Fax: (+852) 2791 6484
Skype: adrian.raper
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