===1. Visibility of System Status===
Make sure Think about an elevator, I press the button and it lights up. I know the elevator is coming. I look up and see how long I have to wait until the elevator arrives. Let people know what is going on with appropriate feedback. Do your users know what is going on, and what is expected of them.Ask yourself, do I know what is going on and what is expected of mewill happen next?
You can meet these criteria by: