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I am about to setup my first windows application which is built in C# Visual studio 2010 to my customer. I want to limit usage to only one computer per installation, but I do't know how to do that.

Can anyone guide me on how I might accomplish this?
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Quick Google found this[^].
 
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1 - Your program should make a unique ID based on user computer hardware. You can use this article:
Searching for a reliable hardware ID

2 - User should send this code to your mail, then you send him/her, the activation serial number.
But it’s better to make a website. Then user can enter his Hardware ID and your website can give him/her the activation code after checking hardware serial number and other criteria.
 
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