The idea is actually simple and logical. It came from a workshop we had with a liquid gas transportation company. They have a large amount of ships transporting liquid gas. If there are issues with the engine, often the expert is the same engineer on another ship working in the engine room. It would be great if the engineer on ship 1 can call the other engineer on ship 2 both via a Microsoft HoloLens 2 device. They can help each other with annotations and making comparisons. Both need there hands free.