Using sticky light technology for projected guidance

A worker performing a physical task may need to ask for advice and guidance from an expert. This can be a problem if the expert is in some distant location. We describe a system which allows the expert to see the workplace from the worker's point of view, and to draw annotations directly into that workplace using a picoprojector. Since the system can be worn by the worker, these projected annotations may move with the worker's movements. We describe two methods of sticking these annotations to the original positions thereby compensating for the movement of the worker.