The brand-new feature in the iPhone X that has never existed on any other iPhone is infrared face scanning.
The technology, called Face ID, uses an infrared camera system on the front of the phone to scan the contours and shape of a person’s head to unlock the phone and authorize mobile payments. The technology works by spraying an object with infrared dots to gather information about the depth of an object based on the size and the contortion of the dots. The imaging system can then stitch the patterns into a detailed 3-D image of your face to determine if you are indeed the owner of your smartphone before unlocking it.
For Apple, Face ID has been years in the making. In 2013, the iPhone maker acquired PrimeSense, a company that developed sensors for Microsoft’s Kinect, a camera system that scanned people’s bodies so people could play Xbox games using body movements.
Face ID is a direct response to the face-recognition feature in smartphones offered by Samsung, Apple’s fiercest rival. Experts have criticized Samsung’s face-recognition feature, which could be tricked by holding a photo of the smartphone owner’s face in front of the camera.