Asus announced the new ROG Keystone 2 today. The device, which is a proprietary NFC key, allows users to easily transfer system and game profiles between supported ROG machines. The Keystone 2 also includes a hidden encrypted storage drive, known as a Shadow Drive.
https://www.notebookcheck.net/Asus-announces-new-ROG-Keystone-2.459583.0.html