This Recommendation specifies names and definitions for quantities and units (and associated symbols) for telebiometrics related to human physiology. This Recommendation defines quantities and units for physiological@ biological or behavioural characteristics that might provide input or output to telebiometric identification or verification systems (recognition systems)@ including any known detection or safety thresholds. It also includes quantities and units concerned with effects on a human being caused by the use of a telebiometric device. NOTE ?C The quantities and units@ their names and letter symbols specified here are those widely used in the disciplines and specialities related to telebiometrics: the telebiometric industry and telebiometry. Telebiometric units are SI units (see [b-ISO/DIS 80000-1]). A code and an associated graphical symbol for the identification of the type of a telebiometric device are also specified in this Recommendation.