An arrow that points at someone you miss instead of north.
It's a snapshot. A code is where someone was, once. It never updates itself.
Nothing is tracked. No account, no server — nothing leaves your phone but the code you send.
A code is accurate to about 100 m. Only send one to someone you'd tell your whereabouts anyway.
It points at a person, not north. Someone sends you a nine-character code; the arrow turns to face wherever they were, from wherever you're standing. It goes green when you're looking right at them.
It's a snapshot, not tracking. A code records where someone was the moment they made it. It never updates, and there is nothing anywhere that could update it. For a fresh direction, ask for a fresh code.
Locations are rounded to about 100 m before they go into a code. Across this kind of distance that points in exactly the same direction, and it keeps an address out of a chat thread.
Sharing is your call. A code works for anyone holding it, and it travels through whatever app carries it. Send it to someone you'd tell your whereabouts anyway.
No accounts, no server. Nothing leaves your phone but the code you send. It works with no signal at all — add it to your Home Screen and it opens like an app, and stops asking permission every time.