

Yeah the device should not be connected to the internet or u gona have a subscription based tab water quick lmao.
Thing is i am quite sure that most would just use another water tab to wach once one is blocked, so that device would be needed on all sinks. But even then, i suspect it can be worked around, by filling up bottles beforehand with water and soap. Humans are smart
You clearly never lived with someone who washes there hands about 20-30 times per day with 10 pumps of soap each time. Like i dont give a fuck if a market exist, i just make that shit, open source it and let the ppl decide.
Sensor for ID dosent need to be a camera (and if so it would be a offline one with no memory), there more ways to ident the ppl who is standing before the sink, a hight sensor, a weight sensor, you name it.
I wash my hands after coming home, after bathroom, after [removed] and before prepping food and i think that is enough, for i value my skins protective layer and prefer to not scrub it off.