Could be provided by Tobii.

Tobii, the world's leading manufacturer of eye-tracking technology, has today put out a statement revealing it is holding talks with Sony to be the provider of PlayStation VR2's eye-tracking software. Talks are in the negotiation phase at the time of writing. As VGC shares, Tobii produces eye and head tracking cameras for use on PC. Lots of Ubisoft titles support the software, with prices sitting at £230/$230.

While Sony may find other uses for the technology, the Tobii Eye Tracker 5 enhances "your experience by extending your instincts into the game itself. All this made possible by illuminators and sensors that calculate your gaze point on your device's screen." Using the movement of your own eyes, you can aim guns and select items within games. This feature will be part of PSVR2 along with foveated rendering, which dynamically adjusts the resolution of a game in accordance with what you're looking at.

Read the full article on pushsquare.com