Definition „Usability“ degree of difficulty: intuitive handling (ease of use) and learnability (user adoption) also: user-friendliness
Definition „Usability“Quality of user interaction with a system.User interface is defined as user-friendly, if it is simpleand intuitive, suits for use case and user scenario.This includes methods of measurability:practicability (suitable), efficiency (quick),accessibility (barrier-free), typography, ergonomics,etc.Only since 2010 there are international common
Definition „User Experience“ Individual, subjective, personally „felt“ user‘s impression of a product.
Definition „User Experience“ Combination and interaction of anticipation & expectations, impressions, practical experience and evaluation (incl. both, usability and fun factor) of a product, system or service (or sum of them), involving or integrating context, with subjectively imposed standards and user estimation, fluctuating and varying.
Definition „User Interface“ Interface of human-machine interaction also: UI = graphical design and control concept
Definition „User Interface“Human-machine interaction (HMI) interfacebased on and optimized for human capabilities and needs,enabling the user to control and operate a machine orsystem with mutual input / output interpretation.This includes graphical design, display (visual),microphone and speakers (audio), human-device interface(HDI) accessories like keyboard, mouse or pen, hapticfeedback, finger touch and gestures, etc.
User Experience Usability + User Interface + their consistency Functionalities + added value Individual expectations Components of communication Fun factor (gamification) Context
UX: Consistency Inconsistency of control concept and graphical design of mobile OS, esp. BlackBerry, Symbian and Android e.g. on Android: allocation of „Back“ and „Menu“ buttons, insufficient definition of style guides
UX: Don‘ts Request user input for self-evident or unnecessary information (waiver of prefill) Violation of OS style guide Adopt or copy concepts from other OS Unacceptably long start and reaction
UX: Do‘s Consistent, clear and obvious structure Intuitive controls (not requiring manuals) Short distances for clicks Obvious Use Cases (smartphone vs. tablet !) and dedicated added value versus mobile web site Reasonable and complete standard settings
UX: ExamplesPositive (full screen game iOS) Positive (full scrren game WP7)
UX: ContextUX may also significantly depend oncontext.E.g.: a banking app must not be playful orhiggledy-piggledy, but serious and lucid,the design must suit to the banking andsecurity use case and claims.
UX: Context App Store: app description and pics Information politics Update frequency Extensions: Social Plugins, sharing Utilization of app ecosystem
Golden Ratio Since ≈ 2400 years, in mathematics and arts, the Golden Ratio or Divine Proportion applies to 2 quantities as follows: This ratio is the golden figure ⱷ (Phi) ≈ 1.618
Rule of Thirds Every photographer knows that desired objects are to be placed in thirds. Laying such a pattern of lines onto a WP7 display you can easily see that elements are placed in an optimal way.
Golden Ratio Laying the Golden Ratio‘s helix onto the display you can see that empty spaces are also set in an optimal way. Live Tiles are especially emphasized and the total composition looks balanced.
Design Guides iOS:http://bit.ly/iOSDesignGuides Android:http://bit.ly/AndroidDesignGuides Windows Phone:http://bit.ly/WP7DesignGuides
Thank Youvery much Franz Haslbeck André Haase Composed by: Franz Haslbeck, André Haase Presented by: Franz Haslbeck