Touchless sensing is the next generation evolution in human machine interface (HMI) technology. It is typically used to detect the presence or motion of a person within the coverage area of sensor. Touchless sensing is a technology that combines the advantages of optical sensing with biometric sensing systems. Touchless sensors enable scanning of biometric images or simply the presence of a person without the need for physical contact with the sensors. The optical source in the system illuminates the objec
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