Intel's RealSense 3D camera supports this functionality and the microprocessor manufacturer has published a website with a list of all the devices supporting Windows Hello facial recognition.
It is important to have your eyes examined regularly. Your eyes should be tested: before age 40, every two to four years. from age 40 to age 54, every one to three years. from age 55 to 64, every one to two years. after age 65, every six to 12 months.
Children should have an eye exam every two years or more often if there is an eye or vision problem or a family history of eye disease. School children use their eyes more often than adults to read and perform other activities, so it's critical for them to have regular eye exams.