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R3 - Paper Prototyping

We did 2 round user-testing on Monday. The original design is based off the dual panel concept. We took the feedback on Monday and designed and tested an additional UI over the break.

Objective

The objective of this UI is to help people with dietary restrictions safely explore the menu items offered by restuarants

Briefing

Here is the briefing we gave to users: Purpose of application: To explore the food options safely using our menu.

  • You are a "chicken vegetarian", someone who is a vegetarian, except that you eat chicken.You are also allergic to peanuts

Scenario Tasks

Here are the tasks we gave to users, one after another.

1. Enter the dietary restrictions to the interface.

2. Browse the menu for an item that you can safely eat.

3. You realize today is a special day(permitted by your religion) so you want to eat burgers. 

Prototype photos - Round 1

The original prototype is based on the dual panel concept. It consists of two main windows, one to manipulate restriction, and one to manipulate the dishes.

Prototype photos - Round 2

Design Sketch - 

 Paper-prototype - (Evan add your photos)

Observations from Monday's User-Testing

Total number of users tested: 6

User testing observations (1st Round)

  • Restrictions
    • Unclear whether checking item 'includes' or 'excludes' it
    • Item preference selection inconsistent between 'restrictions' menu
    • 'Partial checkbox' for partially-restricted item groups is unclear
    • Some food categories were obvious (chicken is obviously under 'protein'), some were not (is 'peanuts' under grains?)
    • Users appeared to understand that checking an 'item group' meant checking everything beneath it
    • Right-pointing arrow to indicate 'folded accordion' was well-understood
  • Groups
    • Not clear if checking 'vegetarian' is reversible
    • Some users simply selected 'vegetarian' and did not attempt to 'de-select' chicken
  • Item browsing
    • Not clear at first that this is *not* an ordering system, just a menu system
    • Not immediately clear what selecting 'happy face' did (reordered preference list, moved preferred items towards the front)
    • One user wanted to be able to 'dislike' food; not sure if that would cause even more confusion
    • Use of 'neutral' face to indicate lack of restriction/preference is confusing; suggest happy face (and excited face for preference)
    • Some users thought X/neutral face/happy face meant 'amount of ingredient in food'
    • User are not sure how to deselect an item.

Paper-Prototype Iteration (2nd Round) - Revisions

  • Unify preference/restriction editing menu 
    • Instead of X/neutral face/happy face, use 'disgusted' face/happy face/excited face
    • Use clearer categories than 'grains/fat/protein' (where are peanuts?)
    • Drop check-box interface entirely
      • Perhaps preserve 'restrict all' button?
    • Use same interface for 'edit
  • Clarify how to switch between menu and restrictions
    • Big, eye-catching arrow
    • 'Directional' for consistency; the menu is to the 'right' of the preference restrictions
  • Remove ability to edit 'generic' preferences from menu viewing; only list selected items. Decrease UI clutter
  • Using 'leading' phrases to indicate what to do: "what can't you eat?", etc.
  • Add 'undo' button to indicate actions are reversible; grayed out when no actions are possible

   Modified Revisions - (Wei added / feel free to edit)

  • Ignore the "preference" option and focus on the restriction - to avoid confusion.
  • Put the restriction and the menu on the same page - improve visibility, enable direct manipulation
  • Add switch language Button - to overcome language barrier issue.
  • Add registration option / Save button, in case the user wants to build a profile - Improve efficiency .**  If the user click the save button, she sees a sign-up/login page, which enable her to save the restrictions to her account .  
  • Strike through the ingredient when it's checked/clicked, also change the color of the chosen ingredient to red - add visual cue to the chosen restriction ingredients.
  • Use small user-friendly pop-out window,  while darkening the rest of the page - To let the user to check the ingredients more thoroughly. **   small window contains: **  with list of full ingredient ** input field for possible special instructions 
      • a big green "Add item" button,
  • Add " Your Order" column. - Let user review what has been saved** 
    • When user add an item, it will show up on the "Your order" column.
    •  Show price for each item, and also show subtotal,tax and total price.
    • Remove option (a red cross icon) shows up when an item is clicked.
    • Add a green button for pick-up option.
    • Add a deliver button for deliver option.
    • Order will be temporally saved to profile.
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