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Principles of Usability
 

Principles of Usability

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Principles of usability - thought provoking principles when considering security as a tool for mass communication

Principles of usability - thought provoking principles when considering security as a tool for mass communication

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    Principles of Usability Principles of Usability Presentation Transcript

    • PRINCIPLES ON USABILITY PETER GULLBERG VP TECHNOLOGY STRATEGY
    • Usability
      ONE DEFINITION OF USABILITY…
      “When you conveniently can use a product or service and it meets your expectations.”
    • Human performance and abilities
      WHAT NEED TO BE CONSIDERED IN USABILITY
      Readability
      Ergonomics
      Vision
      Human memory
      Design
      Learnability
      #1) Bailey (Human Performance), #2) NASA – On the typography of flightdeckcommunication
    • Visceral design - first see feeling
      Behavioural design - the feeling of using the device
      Reflective design - what the design communicates
      Design
      WHAT HAS DESIGN GOT TO DO WITH USABILITY?
      Don Norman, the authority in User Interfaces
    • Affordance is the cues (knowledge in the world) that something signals.
      Inserthere
      Logotype – access to my bank
      Clear and instructive display
      Understandable legends
      Numericalkeysclearlyseparated
      Understandablebuttons
      Screw on battery lid tellscustomer - ”Yes, can be opened, butonlywhenneeded”
      Perceiving the world
      AFFORDANCE
    • Learnability is achieved by
      • Symmetry in functions (routinecognitiveskills)
      • Visual cues (knowledge in the world)
      • Feedback, Information and Decision
      • Fitusers mental model (knowledge in the head)
      • Repeateduse
      Learnability
      LEARNABILITY IS IMPORTANT
    • A+B=110
      A is 100 morethan B.
      What is B?
      Knowledge in the head
      THINGS CAN APPEAR EASY……
    • A+B=110
      A is 100 morethan B.
      What is B?
      B=5
      Knowledge in the head
      THINGS CAN APPEAR EASY……
    • Knowledge in the world
      ADDING CONTEXT
      Increasedawareness
      Increasedcognitiveprocessing for the relevant details
      Increasedusability
      Understandablefunction
      Increasedintent (moresecure).
    • Knowledge in the world
      THE 10 EURO NOTE
      But, what’s on the frontside?
    • Knowledge in the world
      THE 10 EURO NOTE
      The seethrough
      split ”10”
      But, what’s on the frontside?
      ECB President
      signature
      Hypotethical
      doorway
      architecture
      Microprint
      Euro flag
    • Perceiving the world?
      SOME THINGS ARE JUST HARDWIRED…..
      Can you spot the difference?
    • Perceiving the world?
      SOME THINGS ARE JUST HARDWIRED…..
      Can you spot the difference?
    • Search and explore is howpeoplelearn new complexthings and products.
      Example is the remotecontrol, dotightropewalking or your new iPod etc.
      Would you daredotightropewalking?
      Exploring the World
      SEARCH AND EXPLORE
    • People are afraid of loosing - by human design
      When that happens - search and explore stops
      Same line, just different location - still same answer?
      The same goes for PIN…
      Exploring the World
      WHEN DO SEARCH AND EXPLORE STOP?
    • Design is important, wrongcueswill cause problems
      And Securityhave to be balanced with usability
      Usability and Securityhaveopposingvalue, and need to be balanced
      Design
      DESIGN IS IMPORTANT
    • Trust
      TRUST IS THE RESULT OF A USABLE PRODUCT
      Trust comes from meeting and beating customer expectations.
      T=r+d
      Trust = reliability + delight
    • What is usability?
      USABILITY IS ABOUT MAKING THINGS EASY AND UNDERSTANDABLE FOR THE USER
    • Progressive Disclosure
      FOCUS ON RELEVANCE
    • Progressive Disclosure
      FOCUS ON RELEVANCE
    • Usability
      DESIGN FOR YOUR USERS
    • What is usability?
      SUCCESS CRITERIA’S FOR A SECURITY SOLUTION
      • User friendly
      • Logical functionality
      • Reason of usage
      • No cryptic texts
      • I-follow-you
      • Context support
      • Portability.
    • Books I wouldrecommend
      GOOD LITTERATURE FOR PRODUCT MANAGERS AND USABILITY SPECIALISTS
      Emotional Design – Don Norman
      PredictablyIrrrational – Dan Ariely
      The design of everydaythings – Don Norman
      Human Performance Engineering - Bailey
    • THANK YOU FOR YOUR ATTENTION