Hi… I have air tags on my husbands keys (he carries, but doesn’t drive) in his wallet and I have many extras that I could put on his belt loops. They work with iPhones. Also, one of my next steps will be to put a pool alarm on the front door that will sound even if he remembers the alarm code to our alarm system. Anyway, air tags are available from Costco, and Amazon and directly from Apple. Amazon has many different types of air tag holders… and Apple has the find my phone app… which allows you to create labels for everything you attach an air tag on.

We used the phone for awhile but now he will not keep it in his pocket. I put an air tag in his buttoned pocket and found it under the couch. When i attached it to his belt loop he undid the keychain. Now i use a luggage lock and keep it on his belt loop. I have
Doors secured w locks he cannot open Amazon) and rods in the 4 sliders. I still watch him every minute 24/7. This will end, I am told, w loss of balance and mobility and thus a different set of problems. If he slips out I can locate him w directions immediately. We r also planning a trip, to Chicago, for a family wedding and i will have a lot of help there. 🤞

Similar situation
What is luggage lock?