I could detail the security measures in my truck - but I won't. Why? Because they won't be effective security anymore (and they work because people don't know about them. I'd like to keep it that way.
(My starter switch is unlabelled and "hidden in plain sight." Other security measures are more hidden and more effective. Suffice it to say that I could leave the keys in my truck, and you probably wouldn't be able to get it started anyhow.)