Touchscreen Input Technique

Touchscreen Input Technique

1. Mobility

   • Standing
   • Sitting
   • Walking
     • One handed portrait
     • Two handed landscape
   • Stairs
   • Quickwriting, Two handed chorded Keyboard, Circular Pie, Mini qwerty
   • Skilled Hands

2. Lack of Tactile Feedback

   • Effects accuracy
   • Diffficult to select target

3. Touch Key Size and Locations

   • One handed thumb input
   • Usable size

4. Keyboard Evaluation

   • Accuracy
   • Sensitivity
   • spacing
   • Layout
   • Key size
   • Tactile feedback

5. Pressure Based Input

   • Increase accuracy
   • Increase speed
   • Reduced uncorrected errors

6. Errors

   • Typing
   • Pointing
   • Common desktop and mobile errors
   • WordCompletion
   • Next Key Prediction
   • Swipe Detectection