Analysis of U-scan machines Group 4 Olivia Tran Jamie Tran Josh Wortman Calvin Hsu Oscar Guerrero Shawn Flynn Andrew Wong Todd Espiritu Santo

The U-Scan Express

The Facts Behind the Machine Started in the early 1990’s Designed to save on operating costs Available in several national store chains (Ralphs, Home Depot, Wal-Mart, etc…) Multiple models

Functionality Place items on the holder

Functionality Initiate user interface software Select language Select language Scan Ralphs Club Card Scan Ralphs Club Card Scan items in Scan items in

Functionality Scan in the items and place into bags Scanning deviceUser Interface

Functionality Checking out and paying Payment deviceUser Interface

Analysis: User Interface Pros Gives feedback for most operations Gives feedback for most operations Monitor position Monitor position Button labels Button labels Bi-Modal Bi-Modal Back buttons Back buttons

Analysis: User Interface Cons Grouping of buttons Grouping of buttons Absence of feedback on some operations Absence of feedback on some operations

Analysis: User Interface Cons Grouping of buttons Grouping of buttons Absence of feedback on some operations Absence of feedback on some operations

Analysis: Scanning and Bagging Pros Beep indications Beep indications Walk through steps Walk through steps Visual Feedback Visual Feedback

Analysis: Scanning and Bagging Cons Poor bag anchors Poor bag anchors No indication of where to place extra bags No indication of where to place extra bags Weighing foods and your hand Weighing foods and your hand

Analysis: Scanning and Bagging Cons Poor bag anchors Poor bag anchors No indication of where to place extra bags No indication of where to place extra bags Weighing foods and your hand Weighing foods and your hand

Analysis: Payment and Checkout Pros Coupons Coupons Variety of Payment methods Variety of Payment methods Combine Payment methods Combine Payment methods

Analysis: Payment and Checkout Cons Where is the Receipt? Where is the Receipt? Double prompt Double prompt Can’t use bills over $20 Can’t use bills over $20

“Breaking” the Machine Subject: New user Todd Fairly easy, no errors encountered Fairly easy, no errors encountered Subject: Veteran user Oscar Handles complex errors well Handles complex errors well

Usability Analysis Questionnaire Reasons to use Reasons to use Ease of use Ease of use Taken during weekends at busy times 45 samples

User Statistics Usability Analysis ExperiencedNovice N378 Mean Age 2930 Mean Items Purchased

Method of Payment ExperiencedNovice Usability Analysis

Ease of Use ExperiencedNovice Usability Analysis

User Experience Usability Analysis Used to save time save time 92%63% Used to save time, & feel save time, & feel they saved time they saved time 91%50% Did not use to save time but feel they time but feel they saved anyways saved anyways 67%33% Experienced Novice

Instructions Clear Clear97%43% Not Clear Not Clear0%29% Did Not Listen Did Not Listen3%29% Opinion of Computer Voice Pleasant Pleasant36%14% Annoying Annoying22%29% No Opinion No Opinion42%57% ExperiencedNovice Usability Analysis User Experience

ExperiencedNovice Usability Analysis User Experience: Overall Opinion Rated Experience of… Checking the items Checking the items Interacting with Interacting with the touch screen the touch screen Completing payment Completing payment Using the following rating scale, please circle your rating for the following questions: 1= Confusing & Problematic 2= Some problem or difficulty 3= Easy, no problem

DESIGNERUSER SYSTEM DESIGN MODELUSER’S MODEL SYSTEM IMAGE P.O.E.T., p. 190 Does the USCAN employ a user centered design??

Seven Principles for Transforming Difficult Tasks into Simple Ones: 1. Use knowledge in the world and knowledge in the head. 2. Simplify the structure of tasks 3. Make things visible 4. Get the mappings right 5. Exploit the power of constraints 6. Design for error 7. When all else fails, standardize Does the USCAN hold to Norman’s seven principles??

U-Scan vs. Cashier U-Scan Privacy Privacy Feel in control Feel in control Go at your own pace Go at your own pace Item list with prices Item list with prices Saves time Saves time Cost effective Cost effectiveCashier Comfort Comfort Bagging handled for you (no squished bread) Bagging handled for you (no squished bread) Price checks Price checks Quick error fixes Quick error fixes

Recommendations User interface: Group buttons by function Group buttons by function

Recommendations User interface: Add an animation for processing Add an animation for processing

Recommendations Scanning and Bagging: Anchor the bag holder Anchor the bag holder Large sign to show where to put overflow bags Large sign to show where to put overflow bags

Recommendations Payment: Receipt should be moved closer to the monitor Receipt should be moved closer to the monitor Get rid of the double prompt Get rid of the double prompt

Conclusion Overall rating 9/10 Special thanks to manager man Josh had a traumatic employee incident