alt Hacker News> Wi-Wi stands for Wireless 2Way interferometry
> 2Way
Does that mean you won't get to know the time unless you let them spy on your physical location too? That's what the diagram implies: https://www.gps.gov/sites/default/files/2025-06/CGSICMeeting...
GNSS time is still cooler because you can have extremely accurate time and a reading of your position without the broadcasting satellites knowing you're there.
Replies
PowerElectronix • yesterday at 11:54 PM
I think it only needs the travel time of the signal, but it's not well explained.
There are lots of situations where GNSS isn’t available, especially in broadcasting.
A live event in a convention center for example. You might have a truck outside with GNSS, but it’s blocked inside by the building.