Our company experiments with indoor location tracking using UWB beacons. We've got a few demo kits from different vendors to test it out.
Overall, If you have a UWB receiver devices installed ~ every 4-5 meters (15 feet) you can triangulate beacon's position to a pretty precise degree (around 10 cm / 4 inches accuracy). You can even detect the height of a beacon above the floor.
However, triangulation is the key. Often we have to install extra receivers just to deal with big columns and barriers, sources of intense electromagnetism (like big electric engines or microwaves), or some materials (glass doors turned out to be a major problem, wooden doors - not so much).
I'm not sure how accurate a positioning can be with your phone acting as a sole UWB receiver. Clearly Apple can make it work sufficiently well for an everyday use, but it won't be as precise as they show in carefully constructed demos.
Overall, If you have a UWB receiver devices installed ~ every 4-5 meters (15 feet) you can triangulate beacon's position to a pretty precise degree (around 10 cm / 4 inches accuracy). You can even detect the height of a beacon above the floor.
However, triangulation is the key. Often we have to install extra receivers just to deal with big columns and barriers, sources of intense electromagnetism (like big electric engines or microwaves), or some materials (glass doors turned out to be a major problem, wooden doors - not so much).
I'm not sure how accurate a positioning can be with your phone acting as a sole UWB receiver. Clearly Apple can make it work sufficiently well for an everyday use, but it won't be as precise as they show in carefully constructed demos.