Robotic Mapping

If I wanted to automatically map an environment variable (say floor temperature) in an empty room, would it be successful to put a bunch of your beacons on the perimeter and one on a mapping robot (with its own temperature sensor) and measure the position in the room of the robot’s sample taking location this way? With what resolution could I collect data? If I need to compare measurements taken at different times, how good is the repeatability, assuming I don’t move the perimeter beacons? If I wanted to use a robot to put down colored dots to make trails on the floor of a hospital, would your beacons provide good enough position information to do that?