What if it's not mounted in the ceiling? What about legs/tracks that move the arm to where it needs to go. I was thinking a subsystem that identifies object, e.

What if it's not mounted in the ceiling? What about legs/tracks that move the arm to where it needs to go. I was thinking a subsystem that identifies object, e.g. "there's the toilet" or "there's the bathtub", then moves the cleaning system closer to the object to be cleaned. I have a feeling this puts me closer to a 9 on my scale, but then again I feel like there are robots that do this subtask already? Identify target -> move to target. Plus I could cheat and put some sort of clue (RFID/infrared/big shiny sticker), on each object. Then it's just a matter of moving to the right spot.