CMSC 434/828S - Fall 2003
Prof Guimbretiere

Introduction to Human-Computer Interaction


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Homework #2:
(Due 09/30/03)

I) (75 points) Storyboarding

Consider the following scenarios:

  • Vending machine. Your company has just installed the first cell phone accessible vending machine (a machine you can control the machine and pay for goods using your cell phone). How will your system work?

  • Voting machine. It is election day and millions are going to vote using your new digital voting machine. How will your system work?

  • Digital waiter. Your company has just open the first "digital waiter" restaurant. In your restaurant each seat is equipped with an interactive display letting customers order their food and beverages (food is still carried to tables by humans). How will your ordering system work?

For each of the mentioned scenarios:

  1. (5 points) List and rank at least 5 user goals while performing the task. Briefly explain each goals its rank (It might be useful to first interview a couple of potential users before answering this question).

  2. (5 points) For each of the first 2 goals in your list, provide at least 15 possible ways to help users reaching this goal. Explain each way briefly.

  3. (5 points) Pick the most interesting and practical solution (e.g. each piece of underlying technology must exist, the cost must be reasonable, and the solution should not be too far away from current social conventions) and then explain your choice.

  4. (10 points) Storyboard a typical user interaction for your system. Include a script explaining what is going on for each frame.

II) (25 points) Personas

  1. (10 points) For the voting machine scenario above, describe at least 3 primary personas that will have to use your system. Explain each one briefly.

  2. (15 points) For each persona, list at least 3 main goals for this persona. Explain each one briefly.