I am a DIY enthusiast playing with different sensors and electronics.
Recently I've been trying to make a pill box for my grandparents to track their medicine intake. However, I cannot determine what type of sensor can help me do that.
This company called adheretech claims they can detect how many pills are taken from the bottle but it is not clear how they did it.
I have considered things like weight sensors (which is too big for small bottle) and force sensors which doesn't seen accurate enough to detect pill use?