Paper Prototype

Purpose

Paper Prototyping lets teams create and test interface concepts using nothing more than paper, pens, and scissors. By simulating screen interactions with hand-drawn elements, teams can evaluate layout, navigation, and user flow before any digital development begins, saving significant time and cost.

At a glance

• Group size: 3–6
• Duration: 40 minutes
• Difficulty: Low
• Facilitation style: Hands-on making followed by role-play testing
• Setting: Table with paper supplies; one person plays "computer"

How to run

1. Identify key screens (5 min): List the 3–5 most critical screens or steps in the user flow you want to test.
2. Draw the screens (15 min): Each screen on a separate sheet of paper. Include buttons, menus, text fields, and content areas. Fidelity should be sketch-level — no rulers needed.
3. Create interactive elements (5 min): Cut out pop-up menus, dropdown options, dialog boxes, and overlays on separate paper pieces.
4. Run a test (10 min): One person is the user, one plays the "computer" (swaps paper screens in response to taps), and one observes and takes notes. Give the user a realistic task.
5. Iterate (5 min): Based on observations, revise screens immediately and test again if time allows.

Materials needed

• A4/letter paper (at least 10 sheets)
• Markers, pens, pencils
• Scissors
• Sticky notes for annotations
• Optional: transparency sheets for overlays

Pitfalls & common mistakes

• Too much detail: Detailed drawings slow you down and make participants reluctant to change the design.
• No real tasks: Asking "What do you think?" instead of giving a task to complete yields opinions, not usability data.
• The computer talks: The person playing the computer should only swap screens, never explain the interface.
• Skipping error states: Test what happens when the user taps the wrong button.

Inclusion & accessibility

• Use thick markers for visibility — thin pencil lines are hard to see.
• Describe screens verbally for participants with visual impairments.
• Allow digital sketching (tablet) as an equivalent if handwriting is a barrier.

Variations

• Wizard of Oz hybrid: Combine paper screens with a real device — show paper screens on a tablet.
• Collaborative paper prototype: Each team member draws one screen, then they assemble the flow together.
• Paper prototype with real data: Print real content snippets and glue them onto paper screens for realism.

When NOT to use this

• When testing micro-interactions, animations, or transitions that paper cannot convey.
• When stakeholders require a clickable digital prototype for sign-off.
• When the interface is already built and you need to test the actual implementation.

Source & further reading

• Snyder, Carolyn — *Paper Prototyping* (Morgan Kaufmann, 2003)
• Nielsen, Jakob — "Paper Prototyping: Getting User Data Before You Code" (nngroup.com)
• d.school, Stanford University — "Prototype" method cards