Only I get to lock him and unlock him.
When it's time to lock him up, I do require him to bring me the device. If he's being put in chastity for disciplinary reasons, has to kneel, kiss it and give it to me. Then I take out the lock and key and make him kiss each one. Then I lock him up.. When it's time to let him out, I make him kneel. Then I hold out the key and make him kiss it, then I unlock him. I make him kiss the cage, lock and key before I put it back in its pouch. Last, he puts it away.
If I'm locking him up for security reasons (I have to work that night, but he's going out), he just brings it to me and I lock him up, no rituals.
Husband doesn't like chastity, so having to kiss everything is real humbling.