07 Physical & Body-based UIs

Question 1

Physical User Interface Definition

Answer 1

• computer controlled interactive physical device
• situated in a real-world setting
• extends interaction beyond a classical screen

Question 2

physical embedding vs. physical interactions

Answer 2

Embedding: Make use of objects situated in everyday physical settings
Interactions: Make use of natural body movement (physical interactions)

Question 3

Types of physical UIs

Answer 3

Gestural Interaction
Multi-modal Interaction
Tangible User Interfaces
Topics
Virtual and Augmented Reality
Wearable Computing
Brain-Computer Interfaces

Question 4

Types of Gestures

Answer 4

Deictic gestures -> Pointing and selecting

Manipulative gestures -> Manipulating an object

Symbolic gestures -> Mapping a symbol to a function (e.g., drawing X to delete)

Co-verbal gestures -> Gesturing during speech communication

Static gestures -> Holding a pose (e.g., often used for free-hand gestures)

Dynamic gestures -> Involve movement (e.g., sequence of strokes, shaking, …)

Question 5

Good Gestures should be

Answer 5

conflict-free

distinguishable

memorable

Question 6

Midas Problem with Eye Tracking

Answer 6

The eyes are always on and constantly move all the time

We usually need to introduce clutch to engage/disengage gaze control!

Question 7

Modality definition

Answer 7

• single independent channel of sensory input/output

- between a human and a computer.

Question 8

Output modalities

Answer 8

Vision (see)
Audition (hear)
Taction (feel)
Gustation (taste)
Olfaction (smell)

Question 9

AIP Cube

Answer 9

Autonomy: Computational model can act and react to simulated events and stimuli
Interaction: Users can interact with objects and environment
Presence: Users feel immersed through sensory input and output channels