While we're excited about the idea of new control schemes for cell phones, we're a little wary about the particular implementation being used here. DoCoMo's 904i series uses GestureTek's EyeMobile system to calculate tilt based on digital camera images, unlike the Wii and PS3 controllers, which use internal gyroscopes. An IGN review of EyeMobile-compatible 3D Tilt-a-World warns that the system fails "if your movements are too sudden for the game to translate" and that the setup requires "a well-lit area so the camera can get a good 'fix' on an image." Not to mention the inherent problem of keeping the phone steady on a bumpy subway ride.
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