Throughout my days as a PHP Programmer and a beginner at C# programming I've always wondered of the best way to generate unique serials such as how Microsoft Office and Microsoft operating systems do.
Does anyone have a good guide to how to handle this, Like what are the important factors in generating the unique serial, prevent duplicates etc. small example on how to create / verify them.
Here is the RFC I'm talking about: http://tools.ietf.org/html/rfc1982https://www.rfc-editor.org/rfc/rfc1982.