Even after trying other prototyping techniques, we're still convinced that paper works best. We and our clients use it for many projects these days, just as we did when we first started eight years ago. It's certainly the easiest method to use. Once we've built the entire design, we ask users to complete tasks by interacting with the paper interface, just as they would if it were implemented on the screen. Although paper prototyping often seems counterintuitive at first, we're always pleased at how quickly developers and users understand how well it works once they start using it.
Some sessions become quite animated.
Paper prototyping still has advantages over electronic prototyping technologies, which still haven't quite caught up with paper even after all these years, and we don't use such things as Visual Basic. These days we may start with captured screen shots more often than we used to, but this is because it's become so much easier to produce them. Once we start modifying the screen shots, it's easier to do that with paper, glue, and photocopies than to recreate the screen with a drawing program. One of the best things about paper prototyping is that it works well both for software and web-site designs. He said he'd been trying unsuccessfully for months to get them to work together.