A device and a method process data derivable from remotely detected electromagnetic radiation emitted or reflected by a subject, which data includes physiological information. An input signal is received and indicative entities thereof are transmitted. The indicative entities are indicative of physiological information representative of at least one vital parameter in a subject of interest. The indicative entities are detected under consideration of at least one defined descriptive model describing a relation between physical skin appearance characteristics and a corresponding representation in the input signal such that non-indicative side information represented by non-indicative entities in the input signal is substantially undetectable in a resulting transmitted signal. The at least one vital parameter is detected from the transmitted signal including the indicative entities under consideration of detected skin color properties representing circulatory activity.
