A system for monitoring vital signs, configured to be used in conjunction with a computerized mobile device, the system including: a cover sensor assembly adapted to be operably engaged with the computerized mobile device, the cover sensor assembly having integrated therein at least one physiological sensor； a physiological data acquisition module configured to generate a physiological parameter measurement descriptive of a physical stimulus received by the at least one physiological sensor； and a validation module configured to control a validity status of the physiological parameter measurement.
