SWICKRAlex Odle, Rylan Hawkins, Joe Woo, Mazen Hassan

Overview

Overall Problem and Solution Task Demonstration Tasks Design Evolution Current UI Final Test Summary

Overall Problem and SolutionFind

a Store

View a

menu

Choose your produc

ts

Order

them

Wait in

Line

On the Way

PROBLEM SOLUTION

Task Demonstration

Difficult – Find the closest Starbucks and order a Grande Vanilla Frappuccino. In addition, add this item to your favorites.

Overview

Overall Problem and Solution Task Demonstration Tasks Design Evolution Current UI Final Test Summary

• Task 1 – Order a Vanilla Frappuccino• Task 2 – Order from your favorites• Task 3 – Order for you and a friend

The Tasks

• Task 1 – Order a Vanilla Frappuccino• Task 2 – Order from your favorites• Task 3 – Order for you and a friend

The Tasks

Why these tasks?

The Tasks

• Maximum amount of coverage.• Varying difficulty levels.• Aligned with survey and task analysis results.

Design Evolution

How did we get to this point?

Survey and Task Analysis

• Match between system and real world

Survey and Task Analysis

• Match between system and real world• Map

• Proximity is key• Favorites

• People order the same things

Low Fidelity Prototype

• User Control and Freedom• Error Prevention• Consistency and Standards

Low Fidelity Prototype

• User Control and Freedom

No way for user to change an order except press the back button.

Low Fidelity Prototype

• User Control and Freedom

Low Fidelity Prototype

• Error Prevention

Low Fidelity Prototype

• Error Prevention

Low Fidelity Prototype

• Consistency and Standards

Don’t redefine expected behaviors.

Heuristic Evaluation

• User Control and Freedom

Heuristic Evaluation

• User Control and Freedom

Current User Interface• What does it do?• How does it work?• What is it missing?

Final User Test• Online Survey• Lab Experiment

Online Survey - Method

• Implemented Logging• Tracked time to task completion• Number of erroneous clicks

Online Survey - Results

• First task average completion time was 7:10

• Second task average completion time was 0:32

• Third task average completion time was 1:35 What does this tell us?

How do we fix this?

Lab Experiment - Method

• Observed users as they went through tasks

• Used an actual iPhone

Lab Experiment - Results

• Most users had trouble with Map page• High fidelity vs. low fidelity issues

What does this tell us?How do we fix this?

Final User Test

• Online Survey vs. Lab Experiment• Quantitative vs. Qualitative

Summary• User experience driven changes• Iteratively better product• Different stages yield different challenges

Questions?