1. A system for reading an identifier from a first object having a portion of a repeating feature printed thereon, comprising: an imaging apparatus operable to acquire an image of a portion of the printed repeating feature from the first object, the repeating feature repeating in the direction of continuous travel of a plurality of objects through a printing location, at least the portion of the repeating feature being printed to each object of the plurality of objects, including the first object, as the plurality of objects reach the printing location; and a comparator operable to compare one or more expected attributes of the imaged portion of the printed repeating feature with one or more corresponding actual attributes of the imaged portion of the printed repeating feature, and determine, based on the comparison, an authenticity or identification of the first object, wherein the system is operable to output a notification of the authenticity or identification of the first object responsive to determining the authenticity or identification, respectively.