Screens 1 through 5 are Airbnb concepts reworked with content. Screen 6 is the DIRECTV package retooled for a wedding package. Screen 7 is the appointment booking system lifted from Apple’s Genius bar. Screen 8 was custom designed. Feel free to create the first version using whatever tool (pencil, whiteboard, Photoshop, or whatever works for you) will help you and your team work the fastest. When you know what’s going on in the entire solution prototype, it’s time for you or the visual designers to get to work. Step 3 Paste all the screenshots into the presentation tool. If I am working on my own, I do mockups in Photoshop. If I am working with a team of designers, I advocate building the prototype by using Google Presentation. This helps the team easily collaborate as we build out different screens. The Google Presentation prototype also outputs perfectly to PDF format, as well, so it’s easy to distribute. Bita and Ena decided to build their linear solution prototype in Photoshop and then exported the final product to PDF. This is an important step, because the point of the presentation isn’t to show the solution prototype to stakeholders. It’s to show it to customers. The users need to feel like they are using the interface even if it isn’t interactive. Having a PDF on a pretty color screen like an iPad can be very effective in guerrilla user research (I discuss this in more detail in Chapter 8). The participant can swipe the screen at her own pace. She can move forward and back so she understands the narrative linearity of the key experience. Based on this minimal interaction, you will get great feedback. For instance, when Bita showed the solution prototype to a bride-to-be and her groom, they loved the idea of being able to have a fancy wedding in an affordable home. They had used Airbnb and understood the way private subletting worked. However, they noticed that they couldn’t set up a tour in the home through the solution prototype interface. Bita and Ena hadn’t thought of that. Consequently, they adjusted it to include a calendar function with which users could pick tour dates, as illustrated in Figure 7-17. They then ran another round of experiments to show their new prototype to five more targeted customers to validate that the feature was more than just a “nice to have” add.