Ideas of how to do it yourself
1 - Don't protect it -charge by usage volume instead (a bit more complex but I
do that for some)
2 - Restrict a program to run at a certain site by requiring a licence file.
The file can include for instance some site details encrypted (Have heard of
using the hard disk name hashed). The licence file checking code has some
behind the scenes check to make sure its at the right site or computer.
3 - Variant of 2 - licence for a term, with an expiry date
4 - open source it and give away any income.
At present there is no way to get a small commercial rental from open source
software, if there was it would be terrific. Imagine if 10% of the 500
million or so Firefox users paid $1 a year to use it? now that gets to be
serious support money.
Haven't looked into off the shelf systems, are any of these good, cheap,
reliable, and foolproof?
John
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