Steps to validate low fidelity voice interface prototype

1. Know your user context

a. Who (target audience, someone using VUI),
b. Location (home, public place, work)
c. Emotional state(hurry/ tired)
d. Paint points(issues with existing system)

2. Storyboarding

For the above context create a storyboard of the user & the Machine using sticky notes. Map out the script with sticky notes. Example storyboard by Greg Nudelman

http://www.bbc.co.uk/rd/blog/2017-06-voice-ui-user-interface-children-drama

or using online tool storyboardthat

http://www.storyboardthat.com/

3. List machine commands

Take a list of commands of the Machine from the storyboard created from step 2.

4. Testing & record user testing

Ben Sauer has written great article on Test Your Voice App Idea in Less Than An Hour
Follow 1hour VUI test steps by Ben Sauer

STFU: Test Your Voice App Idea in Less Than An Hour

Use mobile for audio recording to record user testing. So that you can use after post analysis.

https://unsplash.com/photos/FZWivbri0Xk

5. Analysis

Analyse the recordings, list out what commands work, what doesn’t work. So that you can use it for high fidelity prototyping.

References

1. https://chatbotsmagazine.com/stfu-test-your-voice-app-idea-in-less-than-an-hour-2638cdff2503
2. https://medium.com/storyline-blog/the-hardest-problem-in-voice-interfaces-253e2df8f546
3. http://www.bbc.co.uk/rd/blog/2017-06-voice-ui-user-interface-children-drama

Let me know what’s your voice UI prototyping tool?

Follow us on Twitter @Berlinlean & Anil Kumar to get more information on Lean Prototyping & for upcoming events visit here Berlin Lean Prototyping meetup page.