For those wondering about how smart toilets handles function.

These truly are state of the art toilets.

If you want a smart toilet, consider one of the Toto Neorest models...no lever...it figures out what was deposited, and flushes itself once you finish AND lowers the seat (and has an oder filter and vent system so you don't have to smell your own,either). Seems like you'd need an instruction manual sitting on the thing so a visitor could figure yours out...not very friendly.