Assignment 4 M150

2987 Words12 Pages
Question 1 (i) Who are the users? Customers/employees all ages, disabled, deaf, blind, literacy problems and users from other countries. What are the users current experiences of checking out with the help of a cashier at the till? Users like interaction with cashiers, enjoying the social aspect, elderly people may only ever speak to cashiers. Cashiers advise about special offers; customers get to know individuals due to frequency of visits, and shop there feeling they have made a friendship. Cashiers are faster with large purchases; shoppers waiting with few items can become frustrated. What knowledge do users need of procedure and equipment? Users need to identify which tills are for baskets and trolleys; customers use dividers to distinguish between orders, customers only interact briefly with the UI - chip and pin panel and customer viewing panel showing product/price and cost. The new system has a rigid procedure, when to scan, locate bar code where to place item, problem-solve, total shopping, when to enter vouchers, loyalty card and payment. Keeping baskets off the scales and weighing area. How will the new system support and or change their goals and tasks and environment? A good UI is easy to understand and use supporting users in tasks and ultimately meeting needs of users. Users must understand the UI, the goal of leaving quickly must be reached effectively, and unless the customer can leave in an efficient manner then they will not be satisfied. Customers must understand that there are more tasks to complete, stresses that the cashier faces are passed to customers making them more aware of their environment with self consciousness as customers watch each other; here user-centred design is important. (ii) (a) The main difference is that visibility comes before feedback or feedback is the outcome of visibility. Feedback

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