This looks worse than a mouse. I'm just trying to imagine how I'd use this in a game like Call of Duty or Team Fortress. The modern optical mouse gives you precise movement and acceleration in 2 dimensions. The touch surface of this thing is too small to work better than a mouse in a game situation unless you crank the sensitivity way up at the cost of accuracy.

At first I thought it would be movable and contain an optical mouse tracker underneath it, but was disappointed to see it's basically a trackpad with a wheel and a gesture sensor.

Maybe it'll work good for many apps, but it seems every time I see something that tries to improve on the old mouse, it ends up looking worse, at least for my use case.