I "live" next door. He needs his sleep, so I don't go over till I know he's up. Sometimes he wakes briefly as early as 4am, or 7, or 9 , etc, takes his morning meds, goes back to bed, and sleeps till noon or 2pm. By the time I see him, he's forgotten what time he took them.
He has a box with compartments, but I can't tell later what TIME he took them. A card with pills in bubbles wouldn't tell that either.
He takes them when he first wakes, still half asleep, so he can't remember to note the time or to make me a note, etc.
Game camera? Baby monitor camera? Not enough detail, and too much trouble too review the film.
Any other ideas?