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.
Most children will have an eye exam in school around kindergarten or first grade. The American Optometric Association however, suggests parents should take their children in for their first official eye exam by six months old. While that seems young, the earlier you start caring for your child's vision, the better.