Prototyping - University of Victoria · • Explain why prototyping is an important phase of...
Transcript of Prototyping - University of Victoria · • Explain why prototyping is an important phase of...
Prototyping
Objectives
By the end of class, you will be able to… • Explain why prototyping is an important
phase of design. • Create and test paper prototypes. • Explain how to create a high-fidelity
prototype. • Explain what kind of prototype is appropriate
for a given product and phase of design.
What is a prototype?
Q: What are the reasons for creating prototypes?
Low vs. High Fidelity
• Higher fidelity The more it looks & feels like the real system
• A continuum from low to high – Low: paper prototypes, storyboards – High: interactive software prototypes
Sketches
Cardboard Mockups
‘Functional’ Paper Prototypes
Storyboards
Storyboard of a computer based telephone
Computer Telephone
Last Name: First Name: Phone:
Place Call Help
Help->
Computer Telephone
Last Name: Greenberg First Name: Phone:
Place Call Help
Dialling....
Cancel
Call connected...
Computer Telephone
Last Name: Greenberg First Name: Phone:
Place Call Help
Connected
Hang up
Call completed...
Return
Help Screen You can enter either the person's name or their number. Then hit the place button to call them
Call by name->
Computer Telephone
Last Name: Greenberg First Name: Phone:
Place Call Help
Establishing connection->
Low-fidelity prototyping tips • Use sturdy paper – aids reuse • Use separate cards for each component and
containers – flexible rearrangement • Whiteboards are very useful:
– Can move paper components on top of it – Use pens to draw containers and relationships – Multiple colors, easy to erase
• Users can take part in arranging / drawing components
Low-fidelity tips continued
• Use drawing software like Visio – Components can be easily moved, resized
• Alternative: dedicated prototyping software – E.g. Balsamiq:
http://balsamiq.com/products/mockups
‘Wizard-of-Oz’ prototyping • The user thinks they are interacting with a computer, but a developer is responding to output rather than the system. • Good for complex, futuristic functionality
>Blurb blurb >Do this >Why?
User
Speech Interfaces • Experimenter hears the command and makes the system respond accordingly
Intelligent Agents • Person trained to mimic “learning agent”
• user provides examples of task • computer learns from them
‘Wizard-of-Oz’ examples
Software Prototypes • Usually high
fidelity • Incomplete
functionality • May be a
collection of predefined pages & links
Horizontal & Vertical Prototyping
Vertical prototype
Horizontal prototype
Scenario
Full System
Creating Software Prototypes: Tools
• Powerpoint (tips at http://www.boxesandarrows.com/view/interactive) • Keynote (tips at
http://blog.amirkhella.com/2010/06/16/how-to-prototype-interactive-ipad-applications-in-30-minutes-or-less-using-apple-keynote/)
• Flash • HTML • Programming languages • …
Advantages of Low & High fidelity prototypes?
Low fidelity • Quick & cheap • Easy to change • Shows look & feel • Looks incomplete, so
users are more likely to offer suggestions
High fidelity • More complete
functionality • Shows look, feel, &
behaviour • Can test interactivity • Can be used as a
marketing demo
Key Points
• Use rapid prototyping techniques – Low fidelity for early iterative design – High fidelity for more thorough testing of
later designs • User testing is possible, even with
paper prototypes