[program_whiz]

Is it possible to construct an ID using some kind of centralized observable phenomena? Due to how time and distance distinguish things, would they always be unique? Like only one person will ever simultaneously observe stars in certain positions and intensities, color, etc. Similar to how I've heard some companies use lava lamps or other noisy processes to generate entropy.

I guess I'm wondering if there is a way to construct a universal coordinate frame for the whole universe? If so, then its possible to trivially assign local time + x + y + z + salt to make unique ids.