Accusoft.BarcodeXpress12.ActiveX - Updated
UPU S18 4-State Barcode
User Guide > Concepts > Barcode Specifications > Barcode Types > UPU S18 4-State Barcode

UPU 4-State barcodes are used for adding identifier tags to UPU postal items. They can be either 57 or 75 bars in length.




Data Encoded

The UPU 4-state barcode encodes the following data for S18C and S18D barcodes:

This barcode type uses a Reed-Solomon error detection and correction scheme.