And for those users that it isn't an option? For instance my phone is an iPhone provided by my company but I am unable to install applications that are not put in as secure in MobileIron.

If you play this game you must have two things, a valid email address you can access and a system to play it on. There is no reason why the authentication system cannot store a MAC address, query its table to see if theres a match.

If there is a match, great! Log on in. Enjoy the game.

If no match, sign into your registered email pull a time sensitive code and enter it into the game client and tell it whether or not to store the MAC for future use. This adds an extra layer of free protection to every account and does not require purchasing a token or needing to have an iOS/Android device. Or for people just in general just don't like token authenticators. I had to use them for VPN access at work at it drove me more than a little insane.

Add a menu in Mog Station where you can view your MAC address table to remove old/unwanted entries.