Abstract: Provided is a method and system for detecting an object in a conveying system, where the object is one of a plurality of similar but otherwise distinctly individualized objects. The method comprises the steps of: sequentially conveying a group of objects past a first and optionally a second identification station arranged to read an indicia representing the individualization of each object; reading of the indicia of a first object when present at the first identification station; reading of the indicia of a second object when present at the first or second identification station; comparing the first and second indicia against a set of criteria and providing a positive or negative result of said comparison; and allowing said first object to be conveyed to a first location upon said comparison result being positive and otherwise conveying said first and second objects to a second location upon comparison result being negative.