...
Analysis:
Learnability:
Efficiency:
Safety:
Storyboard 2
...
- Large icons, visual cues and buttons is safer in terms of less accidental mis-clicks
- Most actions do not have a natural undo option, which decreases efficiency, but also means elders have two steps to go back (home + choose again)
- Selecting home may cause progress loss in terms of accidentally clicking on home, say if elder was typing an answer