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Claims Analysis: Example ‘Hall of Fame/Shame’ Presentation. Chris North CS 3724: Intro to HCI. Presentations (Hall of Fame/Shame). See course calendar on website Teams of 2 5% of grade 5 minutes, 3-4 slides Practice Bring on CD, usb key, or laptop

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Claims Analysis: Example ‘Hall of Fame/Shame’ Presentation


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    Presentation Transcript
    1. Claims Analysis:Example ‘Hall of Fame/Shame’ Presentation Chris North CS 3724: Intro to HCI

    2. Presentations(Hall of Fame/Shame) • See course calendar on website • Teams of 2 • 5% of grade • 5 minutes, 3-4 slides • Practice • Bring on CD, usb key, or laptop • Pick UI of your choice (software or real-world) • UI critique • Scenarios • Claims analysis (include pictures) • Redesign ideas • Vote: UI Hall of Fame/Shame

    3. UI: Fast Food Drive-Thru Menus • Scenario: • College students (Bburg) • Hungry • Get food, get out. FAST! • Often: sandwich, fries, drink • Typically: Not sure what I want • Sometimes: Know what I want • Passengers want food too • Budget is important, limited cash Note: Tell the story of the users and their tasks, highlighting key requirements.

    4. Claims 1 • Design choice 1: Billboard menu – large visual tabular layout of all food choices: • + all in one view enables fast decisions for the students • + organized by categories supports quick browsing • + tabular layout fast for visually scanning prices (supports the budget-minded students) • - see menu too late, slows down ordering process or rushed • - passengers can’t see menu well, not happy with order Note: Identify important UI design choice in the system, then identify the +/- measurable effects of that choice on the users in the scenario.

    5. Claim 1a: example of detailed choice • Design choice 1a: Billboard menu uses pictures of meals instead of text • + helps them visually decide what they are hungry for • + pictures faster than reading textual descriptions • - pictures take up a lot of space, big sign difficult for passengers to see • - some pictures look similar,reducing order accuracy Note: It is important to consider what the alternative design choices would have been (e.g. textual menu).

    6. Claims 2 • Design choice 2: Microphone/Speaker voice-based interaction • + easy access, fast and no learning • + human in the loop, supports error recovery & questions • - passengers must order thru driver: slow, errors • - winter, Brrrrr! Low subjective satisfaction • - can’t understand what they say, poor audio feedback: errors and limited cost feedback • - they can’t hear me over my ’87 VW -- do students drive old cars?

    7. Other potential good design choices • Combo meals • +Make common tasks fast • Separate Budget menu (e.g. Wendy’s $1 menu) • +Gives limited-cash students 1 place to look on menu • Get price before proceeding • +Can get out cash while waiting, saves time • Visual feedback on order (e.g. Wendy’s LCD screen) • +More order accuracy, price break-down

    8. Re-Design Ideas Note: Identify alternative design choices, how they would address -’s, and what new +/-’s are introduced. • Simple re-design ideas: • More billboard menus back in line + ready to order when reach microphone - might be confusing where to order? • Menu on both sides of car • Microphone on both sides of car • Radical re-design: cell phone, in-car UI + solves audio problems + solves winter problems + solve passenger problem, can hand-off phone + could order before arriving if no menu needed, faster • Possible Cell phone call costs - Time to dial #

    9. Microphone on 1 side - Slow and mistakes on passenger orders + forces serial order + 1 window down in winter + standard, no learning Microphone on 2 sides +Fast and Accurate passenger order - confusion when both talk at same time - 2 windows down in winter - non-standard, some initial learning req’d Identifying Design Trade-offs