06 Mobile & Touch UIs

Question 1

Post-WIMP definition

Answer 1

Containing at least one interaction technique not dependent on classical 2D widgets such as menus and icons

WIMP reduces interaction to the visual channel

Zooming, Browsing, Body awareness (phone next to face switches display off)

Question 2

Mobile Interfaces: Key Challenges

Answer 2

Small screen, small number of keys and restricted number of controls

Many different input modalities and techniques

Mobile devices are used in various different contexts

Single-handed input vs multi-touch

Fat-finger-problem

Question 3

Overcoming Limited Screen Size

Answer 3

Pressure input
Thumb contact
Back of Device Interaction
Handheld projections
Unfoldable displays
Moving the device

Question 4

Interactive Surface definition

Answer 4

The user directly interacts with a surface, e.g., through touching, a pen, or tangible objects

Question 5

Mobile Interfaces Implications/Conclusions

Answer 5

Mobile interfaces can be tricky to use for those with poor manual dexterity or „fat“ fingers

The small screen real estate and the limited control space make content display very challenging

The contexts in which mobile devices can be used must be considered