Comment Great in concept (Score 4, Insightful) 79
...but probably terrible in implementation.
Calibration for each individual person's body type? Tech support that involves actual physical human contact? (shudder) Epileptics would lose all of their work with regularity.
In my mind, this is one of those things where we've already made the intuitive leap to an input that makes sense and now people want to go back and think of something that takes more effort to replicate what we've already done in a more convoluted way.