One or more techniques and/or systems are disclosed for a luminescent film that can be used with a biometric imager, which can be used to scan biometric markers, and/or to interact with the device. Upon contacting a device surface, an image of at least a portion of the touch object can be captured and used in conjunction with identification of the user and/or for input to the device. The systems or techniques, described herein, may be integrated into a portion of a device, and may comprise a luminescent layer, comprising quantum dots, that can emit photons upon contact, and an image capture component that can generate data indicative of an image of at least a portion of the touch object.