Typhoon Depends on the person. Could range from 70 to 90 or above. My father is going to turn 85 in a couple of months. He is perfectly capable of handling a DVR, HD TV, smart phone, etc. He even texts me, and can text photos. He also plays golf to a single-digit handicap and still tees off at the white tee box. So he might be 100 before he "becomes the problem." My mother-in-law was pretty tech hopeless in her early 50s. So it varies a lot.