Idea: New Friend Request System

So I have been thinking about a new system for adding friends in league, mainly because of those spam accounts that add you for elo boosting or rp/ip generator scams.

Here's my idea. Instead of using your summoner name to add a friend give everyone a secret code that is no obtainable by the public or sites like lolking or op.gg . You use this code to add friends and you can only get the code from the person you wish to add. Of course leave the option to add friends in the post game or in lobbies.

Anyways what are your thoughts on this?