Fun fact: when I was looking into patenting this concept in c. 2007, the prior art search revealed that it had already been patented by someone in Japan in c. 1997.
Amazing to think that ideas people had back when Selective Availability was on for the foreseeable future are just now becoming available to consumers. Congrats on getting it done!
Yes, I was working for a company making standalone car navigation devices (remember those?), amongst other GPS-related things - I also worked on a lot of OEM GPS receivers. There was even a guy (not me!) who had written the firmware for a GPS receiver basically from scratch, so I got a look at everything from the very low level up to the navigation UI.
At this point the iPhone hadn’t come out yet, but building data was just starting to show up the maps we used for navigation.
Amazing to think that ideas people had back when Selective Availability was on for the foreseeable future are just now becoming available to consumers. Congrats on getting it done!