This is sort of a tag-team approach to an intelligent sports camera. It’s dubbed the Chasercam and it consists of two devices. The camera (with base) and the sensor target. Just activate it and the camera turns on it’s base and as well as up and down, seeking the sensor target.
You place one of these on the subject, while the other is attached to the person following the subject. Normally the persn holding the cam has to worry about walking into things or tripping, but with this, it’s a piece of cake.