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Label Printing ➝

Modernized label printing tools to help your operations keep up with ever changing demands and regulations – all in one powerful software package.

Asset Tracking ➝

Asset tracking software for monitoring equipment and assets. Optimize usage, locate tools faster, and improve efficiency with our RFID applications.

MarkMagic ➝

Relied on by thousands of customers worldwide, MarkMagic solves barcoding, labeling and forms design and printing challenges. Modernize the way you manage and print your documents with MarkMagic.​ Design and print your forms, labels, barcodes, and RFID tags from one powerful software package.

Why MarkMagic?

MarkMagic is the chosen enterprise barcode label and form printing engine for major WMS products, ERP systems, 3PLs, and teams around the world.

EdgeMicro ➝

A simple RFID starter solution that solves common issues in logistical and inventory management. Ideal for lower scale needs, smaller environments, or proof of concept RFID projects. Deploy RFID into your supply chain without big investments or customizations.

RFID Starter Solution

EdgeMicro is easy to use, easy to implement, and brings immediate results to your operation without heavy investments in time, effor, and capital.

Edgefinity IoT ➝

Edgefinity IoT is an RFID software application built for organizations looking to gain visibility across large industrial environments. Whether you need to track large amounts of inventory, locate misplaced equipment, or ensure the safety of your employees, Edgefinity IoT lets you quickly deploy advanced, industrial strength tracking capabilities.

Enterprise RFID

Edgefinity IoT is an application that combines RFID with tracking technology and gives users the ability to track assets, locate inventory, and monitor employees.

Hardware ➝

For the warehouse, retail floor, in transit, and beyond - We offer the latest hardware products that work with our software applications from brands such as Alien, Brother, Zebra, Bixolon, SATO, Xerafy, and many others.

RFID Tunnel

CYBRA’s RFID tunnel is a 99.99% accurate carton validation solution for conveyor belts. Built for distributors looking to improve shipping accuracy.

[2024 RFID Integration Guide]

Have you been handed an RFID tag mandate from one of your retail partners? This ebook is a complete guide that will help manufacturers, and distributors reap great benefits from deploying RFID into your operations.

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CYBRA specializes in RFID technology, real time tracking systems, and enterprise barcode label software solutions.

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Home » RFID and Barcode Glossary » Plessey Code

Plessey Code

What is a Plessey Code?

This is a type of continuous, pulse-width-modulated barcode. It was developed in 1971 by the Plessey Company plc and is still used in retail stores and rare libraries. The first commercial use of the code was by J.Sainsbury in the early 1970s in a product restocking system. Learn more about the code and its history.

This 1D linear barcode symbology is one of the first to be used in stores. It is still widely used today, and its original Plessey Code was based on it. This code is still used in rare libraries and retail stores for shelf tags. J.Sainsbury, a British department store, introduced the Plessey Code in the early 1970s as part of their restocking system.

The original Plessey Code is a linear barcode. MSI Plessey is a numeric only symbology. Most stores and libraries use this type of code. The Plessey code has a limited number of digits, but can represent a long number. The barcode has a fixed length, and cannot self-check. Therefore, MSI Plessey codes require a toolkit to recognize them.

Another type of Plessey code is the check code. It is a binary format code used in communications. It uses two characters with eight bits to perform error detection and correction. Usually, a checkcode is used to prevent transmission errors. The CRC has a termination bar, which is a full pitch bar. A reverse start code detects the direction of reading and encodes as “0011”. A simple space or “1” is used to decode the reverse start, and a simple digit represents a digit.

Plessey Code
Plessey Code