This is something that I’ve been looking into.
Smart Houses, which to my knowledge is only available to Wintel thus far.
http://marc.med.virginia.edu/QUOTE
Eric Dishman, a social scientist at Intel Corporation, predicts smart houses are just five years away from being an acceptable alternative, although the systems will probably be used in nursing homes before then.
The gizmos that Intel is developing range from simple pressure sensors placed in chairs to infrared beacons in clothing. Messages reminding someone to eat, for example, can be sent through the TV or clock radio.
Computers could also be used to discourage social isolation -- a common problem with depressed, elderly patients - by figuring out when a patient is having "a good day" and hooking her up with a friend.
http://www.wmbb.com/frontpage/MGB1B7KVJED.html