Table 3:
Usability Challenges Encountered using the EMMA®
| Major | Medium | Minor | |
|---|---|---|---|
| Physical/Perceptual | Narrow medication loading slot (C, S) Hard to read type (S) Difficult to identify, retrieve, and open delivered medication (S) |
Blister pack type is small (H, C, S) Small font size of medication instructions (H, S) Small screen and button size (H,S) |
Difficult to select buttons (H,S) |
| Organization | None | Poorly organized menus (C) | “View Inventory” is not available on the home screen (C) “Drops” are poorly organized (H,C) |
| Feedback | The help menu is cryptic (C) | No feedback from buttons (H,C) Not all processes have progress bars (H,C) No feedback when a drop is initiated (C) |
None |
| Consistency | None | Inconsistent use of progress bars (C) | Commands are used inconsistently (H, C) “Drop” menu poorly organized (H,C) |
Note: Letters refer to the analysis method that identified a particular problem: H= Heuristic Evaluation; C= Cognitive Walkthrough; S= Simulation of Age-Related Impairments.