Who even thought this was a good idea, its not even close to a 'good' amount of correct for something like this. And who would store this, would it just be your computer deciding if you are, or is it uploaded, and we all know that wont be secure. This was numbingly dumb.
just let parents handle rated M purchases. if the child has a digital card attached to their account, thats still on the parent to monitor for shit like this.