This document discusses universal usability, which refers to designing information and communication products that are usable by all citizens. The concept was advocated by Professor Ben Shneiderman and is related to universal design and design for all. Usability focuses on making interfaces easy to use, learn, and achieve goals with. Universal design principles aim to make buildings, products, and environments accessible to people of all abilities. The 7 principles of universal design guide creating equitable, intuitive, and comfortable designs.

1. UNIVERSAL USABILITY
SUBMITTED BY: SATYA SURESH K (18352050)
MCA ( III YEAR )
PONDICHERRY UNIVERSITY.

2. UNIVERSAL USABILITY:
• Universal usability refers to the design of information and
communications products and services that are usable for every
citizen.
• The concept has been advocated by Professor Ben
Shneiderman.
• The concept of universal usability ("usable by all") is closely
related to the concepts of universal design and design for all.

3. WHAT IS USABILITY:
• Usability is a quality attribute that assesses how easy user
interfaces are to use. The word "usability" also refers to
methods for improving ease-of-use during the design process.
• Usability refers to how easily a user interacts with a website or
product. It comes under the heading of UX design, but is not
the whole story of user experience design.

4. IN USABILITY, DESIGNERS HAVE TO FOCUS
ON THREE ASPECTS IN PARTICULAR:
• Users should find it easy and become proficient when using a
design interface.
• They should be able to achieve their goal easily through using
that design.
• They should be able to learn the interface easily, so that return
visits are just as, if not more, easy.

5. RELATION OF UTILITY , USABILITY AND
USEFUL:
• Definition of Utility = whether it provides the features you
need.
• Definition of Usability = how easy & pleasant these features are
to use.
• Definition of Useful = usability + utility.

6. 5 QUALITY COMPONENTS OF USABILITY:
• Learnability: How easy is it for users to accomplish basic tasks the
first time they encounter the design?
• Efficiency: Once users have learned the design, how quickly can they
perform tasks?
• Memorability: When users return to the design after a period of not
using it, how easily can they re-establish proficiency?
• Errors: How many errors do users make, how severe are these errors,
and how easily can they recover from the errors?
• Satisfaction: How pleasant is it to use the design?

7. ACCESSIBILITY VERSES UNIVERSAL
USABILITY:
• ‘Accessibility’ defines a set of technical requirements that could
be met and yet the result may not be universally usable.
• ‘Universal usability’ specifies not just the attributes of the
technology but the experience of the users.
• Universal usability is evaluated and measured very differently
than accessibility, by way of real users.

8. UNIVERSAL DESIGN:
• Universal design is the design of buildings, products or
environments to make them accessible to all people,
regardless of age, disability or other factors.

9. 7 PRINCIPLES OF UNIVERSAL DESIGN:
• In 1997, Ronald led a working group of architects, product
designers, engineers, and environmental design researchers, to
create the 7 principles of universal design to help guide the
design process of environments, products and
communications. Here's a summary of the principles.

10. PRINCIPLES:
• Equitable Use: The design is useful and marketable to people
with diverse abilities.
• Flexibility in Use: The design accommodates a wide range of
individual preferences and abilities.
• Simple and Intuitive Use: Use of the design is easy to
understand, regardless of the user's experience, knowledge,
language skills, or current concentration level.

11. PRINCIPLES:
• Perceptible Information: The design communicates necessary
information effectively to the user, regardless of ambient conditions or
the user's sensory abilities.
• Tolerance for Error: The design minimizes hazards and the adverse
consequences of accidental or unintended actions.
• Low Physical Effort: The design can be used efficiently and comfortably
and with a minimum of fatigue.
• Size and Space for Approach and Use: Appropriate size and space is
provided for approach, reach, manipulation, and use regardless of
user's body size, posture, or mobility

12. REFERENCES:
• https://www.rickhansen.com
• https://www.interaction-design.org
• https://en.wikipedia.org

13. THANK YOU