Position monitoring for a hair processing system

A hair cutting system, comprising a portable hand-held hair processing appliance, a hair processing unit arranged at the appliance, and a position monitoring arrangement, the arrangement comprising:

• a plurality of position sensors arranged to be attached to a subject whose hair is to be processed,
• a transmitter that is operatively coupled with at least two position sensors of the plurality of position sensors, and
• a position controller that is arranged to detect a relative orientation between the at least two position sensors arranged to be attached to the subject whose hair is to be processed in a calibration mode and to detect a defined change in the relative orientation between the at least two position sensors attached to the subject whose hair is to be processed in an operation mode,
• wherein the position controller is further arranged to signal a misorientation state between the at least two position sensors, and
• wherein at least one feature of the hair processing appliance is controllable dependent on at least on of an actual orientation and an actual position of the hair processing appliance with respect to a head of the subject.