I have concerns about this. While it is a neat concept and the implementation is impressive, the reality may be problematic. A lot of users may not have the dexterity to accomplish this task with a pointing device, like my Mother. Not to mention anyone with special needs that requires an alternate input device.
I would think "bad eyesight" would be more commonplace than people with disabilities that require an alternative input method.
I deal with real clients (read older people) every day and they can barely read the actual text on the screen, let alone text that is skewed and mangled in an attempt to foil machines.
