What Kind of Security Do You Need?

How well can a user remember on how to achieve its task? Does he have to search the buttons and manuw items every time when he uses the application and didn't use it for a while, or is it just so easy that he doesn't need to look up into help. And again, this probably ties into learn ability, because if it's easy to learn, then it's probably also easy to re learn - which is more or less the same as memorizing what you did before. The next requirement is a very diverse one, which is security. A and we probably have to do a couple of episodes on softer security separately. But the point is that there are different kinds