The Quinlan door locks were large and clunky compared to what I’d been used to on Earth, but the mechanism was nevertheless fairly sophisticated. Again, I was reminded that the Quinlans’ technology was limited, not their knowledge. I spit up a few coins to carry with me, locked the door behind me, and sent in a couple of fleas to freeze the lock mechanism. I was probably being overly paranoid, but the downside of overdoing it was much less bad than the downside of underpreparing.