McInterface SIMS 213 Spring 2001 Linda Harjono Saifon Obromsook John 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!!!