Things They Should Invent: private bath facilities in long-term care homes with controlled access to water

Apparently many long-term care homes have private washrooms with a toilet and sink in the residents' rooms, but bathing facilities are in a separate room down the hall. The reason for this is allegedly that many residents are unable to bathe themselves safely, and, if they had bathing facilities in their own rooms, residents who can't bathe themselves safely but have cognitive impairments might attempt to bathe themselves anyway and end up hurting themselves.

However, I think not having your own bathroom is a bit less dignified and needlessly lowers your quality of life.  You have to walk down the hall in a bathrobe carrying your toiletries in a bucket rather than just walking into your own private bathroom.  I know, we all did this in university, but in adult life we become accustomed to a greater level of privacy and dignity, and I don't think it's right to take this away from our elders.

Proposed solution: every room in a long-term care room has a full private bathroom, complete with bathing facilities.  However, the bathing facilities require a key to turn on the water.  It could be an actual key, or one of those magnetic beep cards like we have on office security passes, or some other sort of tangible object.  Staff members whose job involves bathing residents would have a key to the bath water.  Residents who are competent to bathe themselves safely would have a key to the bath water.  Residents who are not competent to bathe themselves safely would not.

This way, all residents would get to enjoy the privacy and dignity of a private bathroom, while still controlling access to the slippery, fall-inducing environment of bathing facilities to those who can handle it or situations where there is proper supervision.