No accounts. No history. Pick a code word, tell it to your people some other way — anyone in this room typed the exact same word. The word IS the key: messages are scrambled on your phone before they move, and the relay only ever sees scrambled text. Close the tab and it never existed.
Honest limits: the room address is a SHA-256 hash of your code word, and the scramble key is stretched from it with PBKDF2 (310,000 rounds) into AES-256-GCM. Anyone who learns the exact word can join and read — there is no bouncer. A public relay carries the traffic and sees only scrambled blobs, sizes and timing — never words. Nothing is stored or kept by anyone: no message survives the tab.