Here's an interesting two part video series about bike locks, theft and their effectiveness. I thought it interesting to see how easy some of the locks were destroyed and bypassed.

Relevant? Maybe. But an interesting watch if you've got 20 minutes nonetheless.

Part I - https://www.youtube.com/watch?v=6AdugFzCi24
Part II - https://www.youtube.com/watch?v=rhPzF-hyC7Q