The most convincing use case that I've seen was the 'Find stuff in Home Depot' example that was maybe shown at Google I/O 2017.
Pretty much everything else about AR seems like hot air.
Pretty much everything else about AR seems like hot air.
Basically don't look to Google for the 'hot' applications of AR. Look to companies like Autodesk, ESRI, Tekla, Bently etc.
The 'seeing the hidden pipes' is a good example.
Another is facility maintenance. The savings are not insifnificant if you could just guide maintenance teams to the problem spot using HUD navigation, instead of finding the broken gizmo after some search.