MGRS military grid reference system works the same way, more digits more precision. There's a mil-sci-fi novel (forgot name, can't google) where some artillery

MGRS military grid reference system works the same way, more digits more precision. There's a mil-sci-fi novel (forgot name, can't google) where some artillery officer thinks its funny to be a dick and give out ten digit grids "because he can" whereas normal humans mostly use 8 digit grids (like you'd use in a 9-line). I thought that book reference was funny because I'd give out ten digits for the LOLs when I was in the Army. Everyone who gets access to Y or M-code DGPS for the first time has to be a joker LOL. 8 digits is good enough to park a car, 10 digits is good enough to specify an individual theater seat (roughly) GPS is like TV where most people consider it magic and don't care how it works, but if you're of a technical bent there's an infinitely deep rabbit hole to dive into.