Everybody has transparent screens on their AR googles, but how do you overlay information over real objects if the device has no clue what real objects exist and where they are? Without cameras you are restricted to being essentially another screen for your smartphone.
Eh, no. UWB solves the problem of locating yourself in relation to other UWB devices. It doesn't help you identify non-UWB devices (like a wall) that AR glasses might want to know about.
