Nearby Friends shows you that a friend is “0.3 miles away.” It does not show you their exact coordinates. This is not just a UI choice: the system should never expose precise location data even if the client asks for it. Privacy-aware proximity means computing distance and revealing enough for the feature to be useful, while structurally preventing exact location exposure. Bucketed Distance The simplest approach: compute exact distance server-side, then bucket the result before returning it.