The present invention relates to a device (1) and method for obtaining vital sign information of a living being (2). The proposed device (1) comprises a detection unit (3) for receiving light (4) in at least one wavelength interval reflected from at least a region of interest (20) of a living being (2) and for generating an input signal (5) from the received light (4), a processing unit (6) for processing the input signal (5) and deriving vital sign information (7) of said living being from said input signal (5) by use of remote photoplethysmography, and an illumination unit (8) for illuminating at least said region of interest (20) during illumination intervals with light, wherein said light during said illumination intervals is optimized for deriving vital sign information from an input signal generated by use of remote photoplethysmography from received light reflected from said region of interest.