1. A method for identifying an electronic image sensor from at least one electronic image comprising the steps of: determining from said electronic image sensor a reference noise pattern by at least one of: use of a correlation detector; use of dark frame subtraction and flat fielding; use of a plurality of electronic images; filtering said reference noise pattern from at least one electronic image; searching said at least one electronic image for said reference noise pattern; and identifying presence or absence of said reference noise pattern in said at least one electronic image, whereby presence of said reference noise pattern identifies said electronic image sensor as having acquired said at least one electronic image.