HUMAN COMPUTER INTERACTION
HCI 101: Week 2: Session 1
Conceptualising interaction
What is interaction?
Imagine these scenarios
- Calling from a local phone booth
- Calling from a cellphone
What is the difference in the experience?
Recap
Observations
Public phone
-
Public phones are designed to be used by the general public
- Insert money and key in the phone number
- If engaged or unable to connect the money is returned when the receiver is replaced
- Money gets inside the box if phone gets connected
- Insert more money to extend the call
- Many have Braille embossed on the keys
Observations
Cellphone (touchscreen)
-
Intended for all user groups
-
Complex functionality, steep learning curve
-
Save frequently dialed numbers, and press the hot-key to call any of those
-
May be an inconvenience to others!
-
No support for the visually impaired
-
Intended for all user groups
-
Complex functionality, steep learning curve
-
Save frequently dialed numbers, and press the hot-key to call any of those
-
May be an inconvenience to others!
-
No support for the visually impaired
Process of interaction design
1. Identifying needs and establishing requirements
2. Developing alternative designs that meet those requirements.
3. Building interactive versions of the designs so that they can be communicated and assessed.
4. Evaluating what is being built throughout the process
Understanding problem space
Asking the users if the product will address their problems
Getting feedback
Knowing the details of the problems they have
Understanding the problem
Example: Problems carpenters face with a measuring tape
Understanding the problem
Example: Problems with a measuring tape
Version 1 Version 2
Think - Pair - Share
Understanding the problem
Example: Problems with a measuring tape
Version 1 Version 2 Version 3
Think - Pair - Share
What interaction is added?
Tape with marking facility!
What interaction is added?
Digital tape
What interaction is added?
Digital measuring tape with laser beam and a display
More advanced?
How has our navigation evolved?
Refer Maps
Ask people
Remember landmarks
Make Calls
Sign boards
----------------------------------------------------
Kiosks
You are here.
But where is this place?
How has our navigation evolved?
What has changed in this interaction?
Conceptual models
Description of the system in terms of
-
set of integrated ideas
-
what should it do, behave, and look like
This description should be understandable by the users
in an intended manner
in an intended manner
Conceptual models
Two main types:
-
based on activities
-
based on objects
CONCEPTUAL MODELS
based on Activities
-
Instructing
-
Conversing
-
Manipulating and navigating
-
Exploring and browsing
CONCEPTUAL MODEL: Instructing
Accessing the information/getting the result
by instructing the system
Examples
Issue instruction to the system to perform a task (Print a page)
Reminder for appointments (Wake me up at 6:30 AM)
Preferable for repetitive tasks
Issue instruction to the system to perform a task (Print a page)
Reminder for appointments (Wake me up at 6:30 AM)
Reminder for appointments (Wake me up at 6:30 AM)
Preferable for repetitive tasks
CONCEPTUAL MODEL: Conversing
Converse with the system to get information/result
Examples
Train time inquiry system
Search engines
Train time inquiry system
Search engines
Preferable when user needs specific kind of information
CONCEPTUAL MODEL:
Manipulating and Navigating
Navigate within the system using the knowledge of the user about the objects in physical world
Examples
Computer Desktop screen
Solitare card game
Physical action of button pressing instead of giving
command/asking a query (complex syntax)
Computer Desktop screen
Solitare card game
Solitare card game
Physical action of button pressing instead of giving
command/asking a query (complex syntax)
CONCEPTUAL MODEL:
Browsing and Exploring
Search, browse, and find different kind of information
Examples
Train time inquiry system
Search engines
Preferable when user needs specific kind of information
Train time inquiry system
Search engines
Search engines
Preferable when user needs specific kind of information
CONCEPTUAL MODELS
based on Objects
Focus is on the way a particular object is used
in a specific context
Example: Ledger for recording data
CONCEPTUAL MODELS
based on Objects
Focus is on the way a particular object is used
in a specific context
Example: Ledger for recording data
Focus is on the way a particular object is used
in a specific context
Example: Ledger for recording data
CONCEPTUAL MODELS
based on Objects
Focus is on the way a particular object is used
in a specific context
Example: Ledger for recording data: SPREADSHEETs
Activity
What could be the options for a visitor
on Somaiya Campus to navigate without problems?
on Somaiya Campus to navigate without problems?
Mobile App
Kiosk
Activity
What could be the options for a visitor
on Somaiya Campus to navigate without problems?
Mobile App: 2nd Years
Kiosk: 3rd years
on Somaiya Campus to navigate without problems?
Activity
What could be the options for a visitor
on Somaiya Campus to navigate without problems?
Stage 1
on Somaiya Campus to navigate without problems?
Create User profile
HCI_Somaiya_W2_S1
By Sameer Sahasrabudhe
