• We use them every day: programmes, designers, etc have them
  • Windows 98 had 9 displays because of Brady Bunch according to Tony
  • bezels and things between provide means of organizing
  • What happens when we have large displays where we didn't have them before?
  • Large displays can change the way we work with computers and people
  • Shadow Reaching:
  • The computer sees us as 1 eye with a finger, mouse pointer i.e. x-y coordinate, not the rich way we interact with people
  • embody users in large displays
  • we've interacted with shadows our entire lives
  • so that can help us
  • use our entire body as interaction mechanism
  • What if we had cameras that can figure out where our hands are (touch and drag demo)
  • Problems: too large, can't reach etc.
  • So instead, follow shadow around
  • More fluid
  • can also use rendered shadows instead of physical shadows
  • Surface Affordances:
  • what are large displays good for?
  • We do use large displays aka "surfaces": whiteboards, flip charts, etc
  • Observed teams of engineers using these surfaces
  • Surfaces have to manage info, visibiliity and info-suface coupling
  • management - how easy to group
  • easy on whiteboard
  • not easy to add all info
  • visibility:
  • horizontal vs. vertical
  • what if screen was on table instead of at front of room
  • coupling:
  • how easy is it to manipulate info independent of surface
  • e.g. you can tear flip chart, and move elsewhere, so less coupled than whiteboard info
  • the problem is not how to build but
  • Really understanding useful apps and how can we use them to work together
  • On table top displays, reaching is still a problem