Keith over at Northlight Images has uncovered a USPTO patent that shows eye-controlled focus for mirrorless cameras. This has been a requested feature for quite some time and we have seen in the past on film cameras such as the EOS 5, EOS 3 and Elan IIE. It was always a mixed bag when it came to its effectiveness, some people loved it, others hated it.
From USPTO Patent US 2021/0051265
An image capture apparatus detects a subject in a captured image. The image capture apparatus further recognizes its user based on an eyeball image of the user. The image capture apparatus then selects a main subject area from among the detected subject areas, based on information regarding subjects captured in the past and stored being associated with the recognized user.
There was a patent for this back in 2019, but Canon has added to the technology by adding user identification and remembering what you looked at previously. It sounds like the “AI” fun may hit an EVF near you someday.