[Ryoku]

This is one of the worse ideas I've heard of; security wise. Not even at a tech-level. All your data and credentials are a robbery away. Of course, if you get robbed you can probably call in your credit cards from your cellphone... oh... Now, on the tech side... magnetic? Really? We've been through this, it's not secure. It might sound secure in an ideal world where the user doesn't do stupid things like handing over both the card and the phone to someone just to avoid getting the notification or to be shown how it works... or because it's a "store requirement". But we are not in that world, nor we will be.