**10.3 MEMS magnetometer in intelligent wheelchair**

Intelligent wheelchairs used MEMS magnetometer sensors for measuring and detecting magnetic fields. Hall effect, magneto-resistive effect, and fluxgate effect are the most popular principles in magnetometer sensors. Magnetometer sensor measures the magnetic fields based on Hall effect.

ICMetric technology presented here uses bias readings that have been generated from sensor devices. These readings are used to apply ICMetric basis numbers that were utilised as identification for device. Sensor-based identification field has proved that the use of sensory data is possible and that it is feasible to provide device identification.
