Blink: “Where the h-l did they go?”

Blink: “Where the h-l did they go?”
Neo: “These are back doors, aren’t they? Programmer’s access.
How do they work?”
Blink: “A code is hidden in the tumblers. One position opens the lock. Another position opens one of these doors.”Neo: “Are you a programmer?
Then what are you?”
Blink: “I protect that which matters most.”