By Lauran Neergaard, Associated Press HAINESPORT, N.J. -- It looks like a toy, but the bracelet locked around Bob Melnick's wrist gives his wife some peace of mind: If this Alzheimer's patient wanders off and gets lost, he's wearing a tracking beacon to help bring him home.

A mini-industry of technologies promises to find lost Alzheimer's patients - from simple radio-wave beacons that cost $10 a month for batteries, to more-sophisticated GPS devices that can cost hundreds of dollars.