A software application which when executed by a mobile device processor, causes the mobile device processor to present an outline of a part of a human body on a display of the mobile device； capture an image of the part of the human body with a camera of the mobile device； determine whether the captured image is acceptable based on at least one of contrast, light, warping, angle and degree of fit with the outline； and transfer the captured image over a network to a server in communication with a reader station if the captured image is found acceptable.
