We already know the controller has a built-in accelerometer, gyroscope, speakers, front-facing camera, sensor strip, microphone and a 6.2 inch 16:9 resistive touchscreen. What we didn’t know is that it also has an unspecified amount of internal flash memory and a magnetic sensor.
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Magnetic sensor could be used to detect a person’s heartbeat or body motion without a camera. Maybe this is where the forgotten Wii Vitality Sensor will finally make an appearance. Joystiq adds, “magnetometers have been used in smartphones to find true north for GPS and compass applications, however the technology can also lend itself to touch-less, camera-less gesture input.”