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.
And you need a colonoscopy only once every 10 years, starting at the age of 50, as long as the screen is normal. Other tests, like the flexible sigmoidoscopy, video capsule endoscopy and CT colonoscopy, only look at part of the colon and need to be done every five years in order to ensure adequate screening.