Ask HN: What would be some good ideas for AR glasses apps?

Overlay of construction blueprints on reality would be amazing for foremen, site engineers, etc.

Read product barcode in supermarkets and display additional information.

X-Ray app using neural network to produce realistic fake x-rays in real time

Minimal resolution rear view camera for cyclists, Pop-up labels on sticks for landmarks while hiking, Overlay constellations at night, Overlay navigation path for hikes, cross-country skiing, products in shopping centres, ill relatives in hospitals, Navigation overlay for watercraft, predicting safest route, best route based on long term wind direction, avoid larger less-maneuverable craft.

I'm surprised GPS hand unit manufacturers haven't implemented a beeper that beeps once to veer left and twice to veer right when following a loaded route where there is no obvious path i.e. snow.

I think we don't have more navigation 'helpers' due to legal liability, you wouldn't sue your friend who got you lost but you might sue a GPS/glasses software vendor.