How a Key Works
Whoa! This animation makes everything so clear, in a way that would be so difficult to explain in words. I watched it over and over, even though it was obviously worth sharing after only one go-round. Not that I ever thought much about keys before, except to not lock them in the car, but I feel so much smarter now! Link
The system we use incorporates two different keyways and recent changes by the manufacture has a security feature that should prevent traditional key bumping, but thieves are always finding ways.