2.1. What is MSI Plessey

MSI Plessey is a barcode symbology, is a variation of Plessey, is the most widely supported variation of Plessey.

Also called “Modified Plessey”, or MSI.

So:

MSI = MSI Plessey = Modified Plessey

Following description will use MSI.

MSI was developed by the MSI Data Corporation, based on the original Plessey Code, Currently maintained by Symbol Technologies, Inc.

While the length of an MSI bar code can be of any length, a given application usually implements a fixed-length code