Which one of the following methods is NOT suitable for determining the context of use of a cash machine?

Determining the context of use involves understanding the current users, their goals, tasks, and the physical and social environment in which they operate. Methods like interviews (B, C), observation (D), focus groups (F), and even competitive usability tests (E) are used to gather data about this existing context. Presenting an idea for a new machine (A) is a future-oriented activity focused on concept validation or gathering requirements for a new design, not on analyzing the current, existing context of use.

B. Interviewing bank clerks provides valuable insight into common user problems and the operational environment, which is part of the context of use.
C. Interviewing current users is a direct method for understanding their goals, tasks, and pain points related to the existing system.
D. Observing users is a primary method for understanding their actual behavior and the environment in which they use the cash machine.
E. Usability tests with competitors' machines can reveal user expectations and common interaction patterns, which are part of the broader context.
F. Focus groups can uncover shared needs, attitudes, and frustrations about current cash machines, contributing to understanding the context of use.

1. UXQB®. (2018). CPUX-F Curriculum - Usability, UX and User Centered Design. Version 3.1. pp. 39-42, Section 3.2 "Methods for analysing the context of use". This section lists observation, interviews, and focus groups as key methods. Presenting ideas is not listed as a method for analyzing the context.