Screw pressing the buttons. Can I train an Amazon Echo to listen for me brushing my teeth?
I thought it was quite a good idea!
No, seriously, the bathroom is the last place I want the quantified self.
I would 100% buy a digital medi-toilet that analyzes my wastes and warns me if something is off.
Especially coupled with another reply, about my insurance company buying me one. They buy me one tomorrow, and raise my premiums the next year because I drink more than their actuarial table allows.