Your Prototype Is Not Being Honest With Your Users (And Here’s How To Fix It)

This tutorial demonstrates how to build a functional banking prototype login flow using ProtoPie that behaves like a shipped product and establishes user trust during usability testing.

• •Participants can detect when a prototype isn't real, causing them to disengage and skewing research results
• •Making critical interactions like login fully functional with real input validation significantly improves test data quality
• •ProtoPie's Input layers accept actual keyboard entry, and variables enable credential storage for conditional validation logic
• •Building error states and navigation responses that depend on valid credentials creates genuine test scenarios
• •Realistic animations timed to match native app behavior further enhance perceived product-readiness to participants