Interaction Design• The practice of designing interactive digital products, environments, systems, and services• Focuses on understanding the goals and needs of users and trying to design tools for users to achieve those goals• Taking into account a users environment and technological limitations• Deﬁning the structure and behavior of interactive systems
Personas• A description of a user archetype that can serve as a guide to the design process• Composed from a series of ﬁeld activities such as interviews and observations• The descriptions are summarized in 1-2 pages
Use of Personas in Design• Designers use personas when it is not possible or practical to turn to users• Personas cannot substitute involving real users in the design process
Scenarios• A narrative describing foreseeable interactions of types of users (characters) and the system• Include information about goals, expectations, motivations, actions and reactions• Attempts to reﬂect on or portray the way in which a system is used in the context of daily activity
ExampleIt’s Friday afternoon and Joe is ﬂying to Sydney. Hedoesn’t have enough money for a taxi to the airportand he’s running late.He goes to a local ATM and identiﬁes himself.He speciﬁes that he wants $100 from his savingsaccount. He’d like the money in $20 notes so thathe can give the taxi driver the correct change.He doesn’t want a printed receipt, as he doesn’tbother keeping track of transactions in his account.
User Stories• Descriptions of a sequence of actions and events that lead to an outcome• Each user story is limited, and should ﬁt on a small paper note/card to ensure that it does not grow too large• A quick way of handling customer requirements
Examples• "As a <role>, I want <goal/desire> so that <beneﬁt>"• As a user, I want to search for my customers by their ﬁrst and last names so that I can ﬁnd customers faster.
Topics Covered• Deﬁnition of interaction design• Stages of interaction design• Personas• Scenarios• User-stories