Their announcement post says "at least 4 digits, but they can also be longer or alphanumeric", though maybe the feature had launched before that was written? h

Their announcement post says "at least 4 digits, but they can also be longer or alphanumeric", though maybe the feature had launched before that was written? https://signal.org/blog/signal-pins/ https://signal.org/blog/signal-pins/ Far from ideal I agree.