What you need to know Apple has updated its Platform Security guide with information on the new Magic Keyboard with Touch ID. The document explains how the security works. Apple's new iMac will arrive on the doorsteps of buyers soon enough and they'll find a new Magic Keyboard in the box. It'll come with a Touch ID fingerprint scanner for the first time and Apple has updated its Platform Security guide with all of the details. The arrival of Touch ID on an accessory that connects to a Mac wirelessly is something that raised eyebrows when it was announced. Now, Apple is explaining how it maintains security between the Magic Keyboard with Touch ID, and a Mac.