Apple Advances their HMD-Styled iPhone Case by Focusing on its Authentication Process to active the Headset
Apple has been working on an entry HMD system since at least 2010, well ahead of any competitor. In June, Apple was granted a patent for a simple entry HMD-Styled iPhone case. Today, the US Patent & Trademark Office published a patent application from Apple that's an update to this patent that focuses on new patent claims exclusively aimed at this one HMD-Styled accessory for iPhone. More specifically, Apple focuses on an authentication process to activate the headset accessory.
Source: patentlyapple.com