Kelo University's Assistant Professor, Yasutoshi Makino says,
"There are small markers in this elastic device and the markers are detected by this built-in front-facing mobile phone camera. By tracking how the markers move as the elastic device deforms, this system enables a variety of inputs. Basically, the system's precision depends on hardware factors, like the camera resolution and refresh rate."
Check out the 3-axis joystick in action below...
Read More [via TouchArcade]