• Error messages are always bad
• What design rule have we learned which should prevent vague error messages?
  • Audio 0:00:57.791883
  • Prevent errors instead of displaying them

Three Case Studies

• ATM case study
• Audio 0:02:23.040821
  • What jumped out at you?
  • Iterative design
  • Audio 0:04:29.375915
  • You have to think about non-obvious use cases such as poor lighting
  • Video taping responses to the system
  • Eye-tracker
    • You get to see where the user’s attention is at all times
      • You could see if there’s something distracting
      • You can see how long it takes for people to hone in on what they’re looking for
      • Do the users look at the screen when they should look at the keypad (vice versa)
  • Other improvements
    • use-case testing
      • security issues
      • line formed
      • Audio 0:09:08.048261

Video discussion

• Audio 0:17:05.371007
• Very rapid design Nordstrom
• Agile development
• Very iterative design

Apple design question

• Audio 0:20:23.461046
• What guidelines make sense and which are less clear?

  • apple guidelines

    makes sense	don’t make sense
    clarity	deference
    consistency	user control

• Audio 0:30:08.254667

Data-driven Design

• Audio 0:32:15.672038
• volvo video
• Audio 0:41:34.442311
• Volvo takes advantage of big data to better design cars
  • Part failure statistics
  • User customization choices
  • cars interconnected

Vocab

Term	Definition
iterative design	design based on the most recent version of the design where changes and refinements are made
big data	using large data sets to make business decisions