I thought there would be a photo. I guess not.
Many twins are said to have a very special bond. They probably kept each other going throughout their long lives.
For the elderly who are in poor health, are fragile ambulators or have Alzheimers, I would recommend some sort of monitor bracelet. Same thing with some autistic children.
For the general able-bodied population, absolutely not.
I know it sounds cruel but you would have to put a chip in some autistic kids. My grand daughter is autistic and would have it off and gone before you walked away no matter how you attached it.