1. A biometric content display device comprising: a face imager device having a field of view; a camera; an illuminator device comprising one or more illuminators that emit light into the field of view; an electronic video display device to display a personalized electronic advertising content to a person within the field of view, the electronic advertising content comprising targeted marketing for the person; an input device; memory storing program instructions; and a processor communicatively coupled to the face imager, the camera, the illuminator device, the electronic video display, the input device, and the memory, and further communicatively coupled to a database storing a reference iris image, the processor executing the program instructions to: receive an input signal from the input device detecting the presence of a human face in a capture zone defined at least in part by the field of view; responsive to detection of the human face in the capture zone: align the camera with the iris of the person; send a first control signal to the illuminator device, the first control signal activating a synchronous emission of light by the one or more illuminators at a pulse frequency above continuous wave eye safe limits; send a second control signal to the camera, the second control signal activating a capture of a plurality of digital images by the camera, the capture being synchronous with the synchronous emission of light; receive the plurality of digital images from the camera; access the database to: retrieve the reference iris image; determine a demographic characteristic or preference of the person; and find personalized electronic advertising content specific to the person, the electronic advertising content being associated with the demographic characteristic or preference of the person; determine that a first digital image of the plurality of digital images matches the reference iris image; and display the plurality of personalized electronic advertising content.