Why couldn't you use an AI and a bunch of data about a person's family and life to give an Alzheimer's patient memory through a artificial intelligence?
You don't identify and tag people and places with data, but when properly tagged then when a son or a wife gets close their device whether it be a phone or whatever could whisper in the ear this is your son and tell him some relevant things to think about.
I'm not sure how that would go or how accurate it could be but it could provide a way it started early enough for someone with severe Alzheimer's to actually function without really remembering themselves. As long as they remember to listen to and trust the voice of the machine.
