Remembered Spectacles
From: Technology Review -  May/June 2000, page 20

At age 60, 1 in 20 people suffer from cognitive impairment or memory loss. By
age 85, it's 1 in 3. Until there are good therapies for reversing these
deficits, we'll need ways to remind ourselves of what we might otherwise
forget. One unlikely source of such reminders in the future might be
eyeglasses. Specs being developed by a collaboration of the University of
Rochester‘s Center for Future Health and the MIT Media Lab could aid a
forgetful wearer by sensing patterns in the environment and displaying or
whispering a prompt such as: "The person you're looking at is your
son-in-law." Randal Nelson, at the Rochester center, has built glasses with
built-in sensors and display. By this summer, he expects to take the next
step: integrating the glasses with pattern-recognition software. 

http://www.cs.rochester.edu/users/faculty/nelson/home.html