MSI Plessey - barKoder Barcode Scanner SDK

Scan MSI Plessey codes reliably with barKoder barcode capture SDK

1D Barkodes


What is MSI Plessey barcode & what are its specifications

Modified Plessey (MSI), also known as MSI, is a barcode symbology that was developed by the MSI Data Corporation. It is based on the original Plessey Code symbology, which was created in the 1970s by Plessey Telecommunications. MSI is a linear barcode symbology, which means that the encoded data is represented by a series of parallel lines of varying widths and spaces.


MSI is primarily used in the retail industry, particularly in the context of product labeling. It is often used to encode product identification numbers, such as SKUs, as well as other information related to the product, such as pricing and availability. MSI barcodes are often used by retailers to keep track of inventory and to streamline the checkout process, as they can be quickly scanned by barcode readers.


msi plessey


One of the key features of MSI is its high density. MSI barcodes are able to store a significant amount of information in a small area, making them ideal for use on product labels and in other applications where space is limited. This high density also makes MSI barcodes easier and faster to scan, which helps to speed up the checkout process and reduce the risk of scanning errors.

Another advantage of MSI is its versatility. MSI barcodes can be used to encode both numerical and alphanumeric data, making them suitable for a wide range of applications. This versatility allows businesses to use MSI barcodes for a variety of purposes, including product labeling, inventory management, and document tracking.


In terms of security, MSI barcodes include a check digit, which is used to validate the accuracy of the encoded data. This helps to ensure that the barcode is read correctly and that the information contained within it is accurate. Additionally, MSI barcodes can be designed with human-readable characters, which makes it easier for people to read and understand the encoded information.

One of the challenges associated with MSI barcodes is that they are not as widely used as other barcode symbologies, such as Code 128 or QR codes. This can make it more difficult for businesses to find compatible barcode readers and software, as well as to exchange information with other businesses that use different barcode symbologies.

Despite this, MSI remains a popular choice for businesses that need to encode product identification numbers and other information related to their products. Its high density, versatility, and security features make it a reliable and efficient barcode solution that is well-suited to the needs of the retail industry.



  • Developed by the MSI Data Corporation, based on the original Plessey Code.
  • Continuous, numeric only, non-self-checking with variable length symbology.
  • Each symbol character consists of 8 elements, 4 bars and 4 spaces.
  • Used primarily in store shelf labeling for inventory control.


How can the barKoder SDK help with your MSI Plessey scanning requirements

The barKoder barcode scanner SDK can empower any enterprise or consumer mobile or desktop app with state-of-the-art barcode scanning functionality with very little integration efforts.

Download the free trial SDK, evaluate barKoder via its Barcode Scanner demo app, explore our documentation hub, blog posts and more.