Since viruses like COVID-19 are destroyed by 10 minutes of UVC lighting I propose a to use this property where possible.
People keep their social distance but then they all go to the same bathroom. When the room is empty an UVC light can kill a possible COVID-19 virus. Thus reducing the spread of the ;
A door sensor to switch of the UVC lamp.
A PIR sensor to detect human presence.
An indicator on the door how long (10min) to wait before the room has been desinfected. eg. Red, Orange and green
Several UVC lights to light the places that people use.
There should be a version for rooms without ;