Interaction With Eye Tracking

The article examines the use of your eyes as a viable medium to provide input to a computer.
1) Definitely has scope in some areas where acquiring information in real time must be done quickly and efficiently. For example, it could be a very useful addition in the headgear of pilots.
2) The test subjects acclimatized to the new input medium very quickly and preferred it in some scenarios to the traditional keyboard and mouse. There is no real learning curve involved because the system makes decisions based off of what is natural to us.
3) The scrolling text example showcases the usefulness of the system by eliminating any additional actions to change the page. This could fit very well into existing devices like the kindle.

1) The paper lacks reliable test numbers to prove that it is viable. There is no information provided, which tells you exactly how efficient the system was in correctly predicting the motives of the user.
2) Might have a lot of trouble when different languages are involved. For example I might stare at a Japanese word for longer than I would at an English one to understand what it means. This might be confused for a fixation.
3) Still needed the use of a mouse to perform certain functions. Having two separate input devices to perform the same function might get confusing for the user.