Trying to make non-security people to follow security systems is incredibly difficult when it works, and incredibly difficult and frustrating when it fails. This presentation not only describes what to do and what not to do, but also why the different approaches work or not. There are simple guidelines, based on psychological principles, that can help you develop more successful security systems. Explaining and developing security systems in a way that anyone can understand means you can get them to decide to do what you wanted them to do in the first place.