We used to have some fully automated Public toilets around the various areas of Derby, mostly around the shopping centres and outskirts of the city. They were coin operated stainless steel tardis units, rather like a perminantly plumbed in Porta-loo, but with extras. On inserting your coin on the slot on the outside of the capsule,the door would open and the light would come on. The door automatically closed then you had 5 mins to use the Toilet, before the door would automatically re-open and you could exit. Each one had its own sink, soap dispenser and hand drier, Toilet paper was dispensed by a machine on the push of a button, and when you finally exited, the Toilet would perform its Automatic deep cleaning mode using steam jets and blown air dryer jets to sterilise itself. The downside was that they took about 8 mins per cycle to use and self clean, they cost 50p a go, and in some areas they were removed due to being used for vice and drug taking dens. However, they would be perfect for the
purpose of providing a freshly sanitised toilet for each person that needed to use one.