Biometric sensors integrate physical traits of the human body with digital technology in order to provide biometric security. Semiconductor devices like biometric security systems contain algorithms and template database in order to match live biometric samples with the already stored samples in the database. Face metrics, fingerprints, and vein structures in hands among others are some of the physical traits used to prepare desired templates. Increasing concerns of privacy and security along with growing demand for smart gadgets with biometric security systems are some of the major driving factors for the market. A biometric sensor is a transducer that converts a biometric treat such as voice, face, and fingerprint etc. of a person into an electrical signal. Sensors generally measure temperature, pressure, light, electrical capacity, and speed. Biometric sensors are lightweight and compact in design. Furthermore, they can be installed in devices very conveniently. Some key attri...