Handheld Devices
• Wide variety of shapes |
• Often used
in an "eye-less
mode"
(due to distraction, adverse light conditions, practice)
High-tactility
keypads necessary
(elevated keys, sufficient
distance between keys, material that feels different than
chassis)
[audio
feedback too much dependent on ambient noise level !]
• Saving
screen real estate has high priority
- Icons
- Overlapping
controls (which automatically appear and disappear)
- Highly targeted information provision (e.g., through personalization)
• Menus
should be relatively flat
Vertical
screen size thereby does not seem to play a major role, unless it is very small
(i.e. one line only)
• New interaction
paradigms possible
Motion-invariant displays |
|
|
Touchscreen
dragging |
|
|
Hand mirror metaphor |
||
Keyhole/Flashlight
Metaphor |
Texting: low cost, low intrusion on receipient and others, turn-taking, privacy