Question

Suppose that you are evaluating an ATM, do the following:

(a) Use Cognitive Walkthroughs to justify each user action for withdrawing cash from the ATM following the below actions.

• Insert card

• Enter PIN

• Press Withdraw Cash

• Enter the amount

• Press OK

• Remove card

• Remove money

• Remove receipt

(b) Do a Heuristic Evaluation of the ATM screen designs used in (a).

Provide images to support your analysis of both (a) and (b).

Answer 1

Cognitive Walkthrough:

Task - Withdrawing Cash from ATM

Interface – ATM Machine

Action – Insert card, enter the pin, choose to withdraw cash, enter the amount, press ok, remove card, collect the money, take the receipt

Activity: Withdraw cash from ATM

a) Insert card b) Enter PIN c) Press Withdraw Cash

User Task: Insert Card

1. Will the user try to achieve the right outcome? ? Yes ? No

2. Will the user notice that the correct action is available? ? Yes ? No

3. Will the user associate the correct action with the effect that the user is trying to achieve? ? Yes ? No 4. If the correct action is performed, will the user see that progress is being made toward the intended outcome of the task? ? Yes ? No

This goes on for every task needed to be performed.

For Heuristic Evaluation,

1. Define the scope

2. Know the users

3. Decide on the set of usability heuristics

4. Evaluate the experience and identify usability issues

5. Analyze and present the results

Heuristic evaluation is a usability engineering method for finding usability problems in a user interface design, thereby making them addressable and solvable as part of an iterative design process. It involves a small set of expert evaluators who examine the interface and assess its compliance with recognized usability principles. Such processes help prevent product failure post-release.