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.
Some people shouldn't wait until they are 40 to have a comprehensive eye exam. If you have an eye disease or if you have a risk factor for developing one, such as diabetes, high blood pressure or a family history of eye disease, you should see an ophthalmologist even if you are younger than 40. Upon examining your eyes, your Eye M.D. can tell you how often you should undergo an eye exam.