The component is used to create the Plessey barcode symbol. It's defined in the pPlessey unit.The component is used to create the Plessey barcode symbol. It's defined in the pPlessey unit.
The Plessey barcode symbology is known as Plessey Bidirectional. It is an older code still popular in some industries, and it is a lower-density variable-length continuous barcode symbology, It was developed by the Plessey Company in England with formal specifications first dated March 1971. A variation of Plessey Code is known as Anker Code. It has inverted CRC. Anker Code was used in European point of sale systems prior to the advent of EAN.
(*): The Data property, OnInvalidDataLength and OnInvalidDataChar events are available only for the Delphi/C++ Builder 2009 or later.