Initial Designs

We started the design with a parallel design process by working out the initial designs individually. Since each member has different ideas on how to implement the features that serve the tasks, a parallel design should let us explore different design alternatives in this early stage. This parallel design approach should be particularly useful in our case since McInterface is a novel system that does not yet have pre-existing guidance for good design approaches. The main goal is to be able to explore the design space as much as possible.

Even though we did not make each team member concentrate on different aspects of the design problem, our resulting initial designs happen to accommodate the scenarios with different priorities.

• Linda's design
• John's design
• Saifon's design

Two designs used the shopping cart metaphor, which, in this case, was implemented as a tray. Resulting from an analysis on an online grocer website, we emphasized on having the tray displaying the items, their prices and quantities, and the total at all time during the transaction. According to our observation on a web browsing kiosk, all designs assumed the use of a touch-screen without a keyboard or a keypad (unless it is displayed on the screen). We assumed the size of the screen to be 9 inches by 8 inches, with a resolution of about 100 dpi.