1. A method of encoding a two-dimensional color barcode comprising: encoding a first layer of data for the two-dimensional color barcode in the colorant cyan; encoding a second layer of data for the two-dimensional color barcode in the colorant magenta; encoding a third layer of data for the two-dimensional color barcode in the colorant yellow; and superimposing the first, second, and third layers of data for the two-dimensional color barcode encoded in the colorants cyan, magenta, and yellow.