The measuring is done on ESD mats per square inch conductivity. General Osteopathic Council Sharon Proctor. It is designed for stress detection and stress reduction. This has resulted in no visits to the doctor due to ill health or time taken off work. All the power management is done electronically via a specialized power management circuit. The sensitivity is set so fine so as to pick up the earliest sign of distress and issues related to distress. The system is calibrated to measure the very fine and subtle electrical reactions to a group of biological and medical stressors. A short scan follows where you do not feel anything. Always consult with a licensed healthcare practitioner.