This system is designed with the web developer in mind. It has been designed to give a developer the means of tracking their application across the world wide web, and restricting usage of their program to one or multiple domains.
With this system a developer is able to give out license keys and link them to a PHP application they have sold. Every time a visitor visits the PHP application the system will check if the key is enabled and is running on the right domain. If it isn’t it will display an error message.