It could also be used with a camera-based position detection system as shown above, meaning your finger's location and force could be calculated on a non-active surface like an ordinary table.

ENGADGET: Sony patent claims touch force detection via microphone

The plug-in provides vision detection by automatically coordinating the camera and ball position, distance, orientation and more.

ENGADGET: Orbotix launches new Sphero AR tools to get the ball rolling on development

Aka-aki is currently focused on Bluetooth technology, because it's so widespread in cell phones, but the GPS technology in Apple's iPhone is even more exciting, because of its ability to pinpoint the position of its users outdoors, with the iPhone's wi-fi detection performing a similar function indoors.

CNN: Face to Facebook: social networks hit the streets