Good security requires usability. If a secure technology isn’t usable, users will simply use something else - or worse, they might work around the technology to do what they need to do. We will demonstrate this universal truth with a handful of examples and supplement them with good design principles. We will cover UX of key handling, password managers and anti-phishing, and also spend some time on why these products and services so often lack usability. We also won't miss this opportunity to introduce simple human-centered design methods to incorporate in the development process!