Terry Burton edited this page Aug 22, 2016 · 9 revisions


Plessey is a continuous, arbitrary length barcode symbology for encoding hexadecimal data.

Also known as: Anker Code.


  • MSI Modified Plessey is a variant of the Plessey (UK) barcode developed by the MSI Data Corporation.

Data and Options

  • The data can contain any of the following:
    • Numbers 0-9
    • Capital letters A-F
  • Two manditory check characters implementing a CRC check are automatically included.
  • The includecheckintext option makes the calculated check characters appear in the human readable text.
  • The unidirectional option generates a unidirectional Plessey symbol.


Equivalent symbols, the latter displaying the two mandatory check characters:

Data:    01234ABCD
Options: includetext
Encoder: plessey

Data:    01234ABCD
Options: includetext includecheckintext
Encoder: plessey

A unidirectional symbol:

Data:    01234ABCD
Options: unidirectional
Encoder: plessey

Symbologies Reference

Point of Sale

GS1 DataBar

Supply Chain

Two-dimensional Symbols

One-dimensional Symbols

Postal Symbols

Pharmaceutical Symbols

Less-used Symbols

GS1 Composite Symbols

Raw Symbols

Partial Symbols

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