Biometrics refers to the way people use computers and optics, acoustics, high-tech tools such as biosensors and biostatistics combine and use the body's inherent physiological features (such as veins, faces, irises, fingerprints, etc.) and behavioral features (such as handwriting, voice, gait, etc.) to determine the identity of the individual.
Based on the above definition, a secret-related place setting up strict access control where people can enter only after the password is correctly entered and the name of the staff member with access rights is handwritten on the resistance screen is most likely to use biometrics.