Adding Product Registration to customers Email

Do you know of a service that will add a product registration feature to a Visual Basic 6 program?

I want the customer to receive a product registration in the confirmation Email and to have them enter that code into my program which will then verify online that they are a customer and purchased that edition of the program.

Thank You!
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Steve BinkCommented:
Here is a promising LGPL include.  It can generate the keys, and you'll have the source.  Tweaking the key generation algorithm to be unique should be pretty easy.  The same for making it "phone home or die" as a license check.
TypingStarsAuthor Commented:
Interesting, but I would have to generate the codes and email them to each customer.  I'm looking for an automated way of doing it, so that customers receive the code in a confirmation Email that they receive after purchase.  My program would then have to have code similar to what you found that would verify it online.
Thank You
Steve BinkCommented:
Triggering the license generation and including it in an email should be a relatively simple exercise.  Doing it en masse based on existing/new customer records should be relatively simple times "x" customers.

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