We took the joystick for a spin on a Samsung Galaxy Tab 10.1, Motorola Atrix, Nintendo 3DS and a pair of laptops. All of the joystick prototypes connected using Bluetooth or USB, and were designed specifically for this CEATEC demonstration -- sadly they won't be available for purchase, though manufacturers could implement the controller into similar products. It took only a few seconds to get accustomed to the pair of joysticks mounted to the back of the Tab. Controlling gameplay felt natural, and we definitely preferred playing with a clear view of the display. We also navigated through Google Maps, and scrolled a web page -- both experiences felt superior to moving around the touchscreen. The 3DS joystick functioned similarly to the native controller included with that device, though Knowles reps noted that it's significantly smaller, and uses less power -- and without compromise, it seems.
Jump past the break for a walkthrough of the devices we saw today, but try not to fall in love -- you won't be able to use the Joystick anytime soon, if manufacturers decide to implement them at all.
Mems Joystick KJ-33000 for Samsung Galaxy Tab, Nintendo 3DS hands-on