Smart bathrooms are an excellent idea, particularly in the case of seniors and the aging population. There's interesting research being done from University of Toronto [0]. For those suffering from Alzheimer's or challenges that impact their day-to-day, the smart bathroom may be a way to improve their quality of life and give them back some independence.

[0] 2008 Toronto Star article on Prof. Alex Mihailidis - https://www.thestar.com/life/health_wellness/2008/09/01/u_of...