What Is It?

What Is It?

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.

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Project History

The Sensor started as part of the Medical rehabilitation support project and has been in development since then. There is 4th generation of the sensor now. We continually add new features for its firmware and support applications. And we thinking over 5th generation.

You can see a WMS4 (4th generation sensor) with a wrist band above.

A Look Inside

There is an inertial measurement unit at the core of the sensor. It allows us to track sensor movements. The sensor also contains a memory to store the data, wireless connection and a battery. The sensor can thus operate independently on permanent computer connection or energy source.


The sensor has quite wide area of use. A typical example would be tracking human motions. Applications can be as simple as step meter, sedentary or recumbent time measurement or a complex use of several sensors at once.