Hasso Tepper has added “bthcid(8) - Bluetooth Link Key/PIN Code Manager and btpin(1) Bluetooth PIN utility”, along with “rfcomm_sppd(1) - RFCOMM Serial Port Profile daemon”.  These all originate from NetBSD, so I’ve linked to the man pages there for further details.   That’s the lowest consonant to  vowel ratio I’ve had in a while.