The present invention relates to remote photoplethysmography and in particular to a system (1) and method for determining vital sign information of a subject (100). The system comprises a marker (10, 10', 30, 40, 50, 60, 70) for application to a skin (104) of the subject, said marker further comprising a first marker area (11, 11', 23, 34b, 41, 54b, 61b, 71b) configured to transmit light (A, B) at a first wavelength and a second marker area (12, 12', 24, 35b, 42, 55b, 62b, 72b) configured to transmit light (C, D) at a second wavelength, a detection unit (2, 22) for detecting radiation received from the first marker area and from the second marker area of the marker, and an analysis unit (6) for determining the vital sign information of the subject from the detected radiation from the first marker area and from the second marker area.
