Our wearable motion sensor tracks and records movements. It is very easy to use, just attach it to the object you want to track. An example: you can use it to measure arm movements by attaching it to the arm using a bracelet.
The sensor contains a 3D accelerometer, a 3D gyroscope and a 3D compass. It communicates with other sensors or a computer wirelessly.
It is an inertial measurement unit (IMU), i.e. a sensor measuring its own acceleration and rotation to compute its position change. This way the unit is completely independent on its surroundings. It does not need any beacons or satellites, it works everywhere.