How to remove most modern keys (flat, "laser cut") that broke inside ignition lock and also unstuck.

In this video I will first show you how to remove most modern "Laser Cut" or "Flat" key that is broken inside ignition lock, also explain why it could break and how to prevent it.
Of course disassembly process would vary from car to car, but principle is the same - remove the ignition lock and push the key out from the back.
Secondary will show you how to fix "key stuck in ignition" problem that some cars experience.
Here are links to videos of other UA-camrs I've referenced.
1. How to take Dodge/Freightliner/Sprinter panel apart - • 2006-2016 DODGE SPRINT...
2. Key stuck in ignition, cable review - • Stuck ignition key Mer...