1. Wrapping up prototyping

2. Objectives for today Clarify Next Week’s Deliverable/Activity
Moving beyond LoFi prototypes

3. LoFi Prototype Deliverable
Prepare a well organized, somewhat documented (labels on the back of images) LoFi Prototype. This is due at the start of class on Monday.
Be prepared to show it to a group of your classmates for minutes.
Have one or two tasks clearly prepared and printed out.
You will ask a member of another team to walk through the task using your prototype.

4. Storyboards
Series of sketches showing how a user might progress through a task using an interface
Often used with scenarios, bringing more detail
Make it easier to envision the progress of the interaction

7. Medium fidelity prototypes
Now move to the computer (e.g., use Visual Basic or a wireframe tool in NetBeans/Eclipse)
Simulate some but not all features of the intended system  more engaging for users
Purpose
Provide interactive (but limited) scenario for user to try out; gets around limits of LoFi prototypes on testing flow of interaction
May offer a development path to running system

8. How do you limit functionality?
Horizontal prototypes
Entire UI is implemented, but no underlying functionality
Vertical prototypes
Include in-depth functionality for a few features
Common design ideas can be tested in depth
Scenario-based
Scripts of particular uses of the system; no deviations
Wizard of Oz – human simulates the intelligence

9. High fidelity prototypes
Basically complete running system
But may not be:
In a suitable language for delivery
Efficient
Robust
Well-coded
“Build one to throw away”… a common research methodology

10. Recall benefits of LoFi Prototypes
LoFi prototypes are very quick to develop
Early in the process when changes are cheap
Users focus on content instead of superficial issues
Developers aren’t yet invested, thus are willing to change
Don’t set unrealistic expectations
No bugs to halt testing

11. The Prototyping Spectrum
Early design
Brainstorm different representations
Choose a representation
Rough out interface style
Task centered walkthrough and redesign
Fine tune interface, screen design
Heuristic evaluation and redesign
Usability testing and redesign
Limited field testing
Alpha/beta tests
LoFi (paper) prototypes
Medium Fidelity prototypes
HiFi Prototypes / restricted systems
Working system
Late design