A keygen, or key generator if you prefer the full name, is a special program that takes user data sent by an e-commerce provider (name, email, order ID, etc.), generates a serial number or activation code, and sends it back to the e-commerce provider, which then passes the serial number to the user.

WebLM provides a built-in keygen, so you do not need to write a single line of code. You only need to provide your e-commerce provider with the keygen URL for each product. To find the keygen URL of a product, hover over it to open the function menu and click the Keygen URL link.

Then, you need to specify this URL in your e-commerce provider’s control panel. Please refer to this section to learn how to do this in major e-commerce providers.