1. A method comprising: generating first images and/or text on a plurality of items using a first printing process having a first resolution; printing a plurality of unique identifiers, each unique identifier being printed over the images and/or text on a corresponding one of the plurality of items using a second printing process having a second resolution different than the first resolution; capturing a plurality of second images, each second image including at least a portion of a corresponding one of the plurality of unique identifiers and at least a portion of a corresponding one of the first images and/or text; and storing the captured plurality of second images in a computer readable memory, wherein a difference between the first resolution and the second resolution results in an alignment between the first images and/or text and the unique identifier on a first of the plurality of items being different than an alignment between the first images and/or text and the unique identifier on a second of the plurality of items.