Check your golf swing
This being Japan, golf gets top priority. Dreamforest, headed by a former Sony executive (who was responsible for Sony’s Clié PDA business), developed a small module to be attached to a golf club.
Integrated with STMicroelectronics’ MEMS sensors (gyroscope, accelerometer, and magnetometer) and ARM-based STM32 microcontroller, the module can track the orientation, linear acceleration and angular velocity of a golf club. By fusing data from these sensors, the 3-D motion tracking golf club can now expose your golf swing visually, by sending the data wirelessly and displaying it on iPhone or iPad.