Using the scanning technology developed the single pocket models 4161 and 4166 Jetscan, a two pocket version is now available in the model 4191 and 4196. (The 6 at the end of the model number signifies a range of counterfeit detection method and 1 at the end of the model number signifies no counterfeit detection, thus reducing the cost) The main advantage of the 2 pocket unit is, as well as counting mixed notes, the machine can simultaneously offsort a chosen denomination, effectively sorting the currency as it is processed.