McInterface

SIMS 213 Spring 2001Linda Harjono

Saifon ObromsookJohn Yiu Chi Wai

What is McInterface?

• The interface for McDonald’s electronic ordering system

• Eliminates verbal communications between cashiers and customers

• Customers have more control in customizing their food

• “We are making your burger.”

Personas

• Joseph Jones - kid• Michael Cooper - teenager• Ming Zhou – graduate student• Julie Woods – housewife with kids• Loretta Sanchez – McDonald’s

employee

Primary Personas

• Ming Zhou – typical type of repeat customers, does not want to pay by a credit card, hesitates to communicate with the cashier

• Julie Woods – have kids who want toys (cover Joseph), different special requests, low computer skill (cover Mike)

• Loretta – edge-case

Testing Low-Fi Prototype

• “I want to use cash!”• “Why would I need a McCard?”• “What’s a MyFav?”• “Too many decisions to make!”• “Too many steps, I would just go

up to the cashier!”• “Where are the toys?”

Current Design

• Hold off the McCard (the smart card) function for this prototype– MyFavorite – useful?– Adding value to McCard

• Allow cash, ATM & credit cards• Focus on the ordering process

Scenarios

• Ming buys a Big Mac Meal (Quickest version)

• Mike buys 2 McDoubles, 2 Cokes and 1 large fries for himself and his date

• Mrs. Woods buy a meal for herself and whichever meals that offer toys for her kids.

Current Design

• Minimize number of required steps and decisions– Tabs (2-level) to a list (1-level) menu ->

hide order summary to make more space– Rearrange item details (associate sauce to

food item)– Language selection as starter

• Preview toys• Eliminate ‘tray’ concept

First Interactive Prototype

• Microsoft Access plus VBA• Not much of the graphics yet• Leave out…

– Error handling mechanism– Some food categories: New Tastes & Mini Meal

Deals– Certain Item Details: dressing, dessert flavor

• Not plan to implement– Touch-screen– Other languages– Interactive feedback in payment activities

Lessons

• Don’t focus too much on the implementation!

• It’s easy to lose focus on the users. Don’t!

• Be bold in throwing away bad designs• User testing is a must.• Paper prototypes are extremely

useful• So, iterate, iterate, iterate!!!