The present invention relates to a device (16) for remotely obtaining vital sign information of a living being (14) under phototherapy treatment. The device comprises a detection unit (22) for detecting light of at least one wavelength interval reflected from at least a region of interest (20) of the living being (14) and for generating an input signal from the detected light a processing unit (24) for processing the input signal and deriving vital sign information of said living being (14) from said input signal by use of remote photoplethysmography and/or motion analysis and a control unit (26) for controlling at least one of the detection unit (22) and an illumination unit (12) for providing the phototherapy treatment to the living being (14) based on the configuration of the detection unit (22) and based on the configuration of the illumination unit (12). The present invention further relates to a corresponding method as well as to a phototherapy apparatus (10) including a device as described above.
