The US Patent & Trademark Office published the document last week, which was filed by the tech giant in September.
The patent was titled 'Light Recognition Module for Determining a User of a Computing device'.
It goes on to explain that the FaceID system will use light modules to determine the face of the user.
As soon as the screen finds the face, light will be emitted and reflected back at them.
It's much similar to the FaceID on Apple's iPhones and iPads.
The drawings of the feature in the document shows a notch similar to those on the iPhone X - which was launched back in 2017 - and all devices released since.
Although Apple filed the patent, it doesn't mean FaceID on MacBooks will necessarily enter production.
The patent finding comes after Apple launched its new MacBook Air with a brand new keyboard and improved specifications.
The tech giant added a revamped Air after they released the all-new 16-inch Macbook Pro.
It comes with a new improved scissor-switch keyboard, which is known as the Magic Keyboard, and doesn't use their controversial faulty butterfly mechanism on previous models, which they had to repair for many.
The new Air is high-tech too, with 10th-gen Intel processors up to a 1.2GHz quad-core Core i7.
Plus, it comes with 80 per cent improved graphics performance and Intel Iris Plus Graphics.
Owners will also be able to make use of a mammoth 256GB of storage, which can be expanded to 2TB.
The new MacBook Air for 2020 begins at $999.