Six Signs That You Should Use Paper Prototyping
This time of year, there's plenty of leftover wrapping paper sitting around. Why not put it to good use? If you create interfaces, you may have heard of paper prototyping. It's a technique that lets you mock up, test, and refine a design -- totally on paper -- before you write a line of code.

Using Paper Prototypes to Manage Risk
Case Study: "We completed the prototype by the end of Day 3. It wasn't very neat - it had hand-written text, crooked lines and last-minute corrections - but it was good enough to show what the screens would look like."