Even with the stationary requirement, this is pretty neat.

One could imagine cheap turn-key devices that self locate and provide an accurate beacon for real time triangulation.

Also possible use cases: Drones, Drone attacks on individuals with smartwatches, tracking of dissidents, these days you have to think about all possible angles.

I imagine a system where several devices broadcast their coordinates to each other, and this way each device knows how far it is from a device and approximates its location based on the distance and coordinate of the other device, then matches it with its own GPS to narrow its coordinate even further.

> centimetre-level precision over four hours with a stationary setup

Ok, so does this really mean the smartwatch should not move for four hours?

while researching links to back up me calling this a nothing burger, I found this: https://m.youtube.com/watch?v=twqqak3XVuY which upgrades this to Puff Piece.

it gets worse- the overseeing professor mentioned here, and in the video, is the author of the paper linked in the description- from 2018. (https://link.springer.com/article/10.1007/s00190-018-1192-5)

See: https://www.u-blox.com/en/technologies/high-precision-positi... for information thats not one guy stroking his... ego.

Also, PPP-RTK is another keyword.

Cheap positioning for construction projects.

How can this support the panopticon of public safety?