What's the add feature setting on my gps for? It asks for a code. Where do i get the codes?

I have a magellan roadmate 1440What's the add feature setting on my gps for? It asks for a code. Where do i get the codes?
Likely they are premium features. They sell you a cheap GPS with basic features, and sell you the codes to unlock the advances features. If that is the case you buy the codes from them. "Hacking" it would be theft of those features.