The Msi barcode was developed by the MSI Data Corporation. It is based on the original Plessey symbology. That's why sometimes the Msi barcode is called the Modified Plessey. The basic implementation of the Msi barcode is used for warehouse shelves and inventory.

 

 

 

Msi is a variable length continuous code and allows you to display digits 0..9. One or two check digits calculated by the modulo-10 or modulo-11 algorithm can be used for control. Each barcode symbol has four elements. An element consists of a stroke and a gap and is 3 units wide. If an element represents binary 0, then the stroke has a width of 1 module, the gap is 2 modules. If an element represents binary 1, on the contrary, the stroke has a width of 2 modules, the gap is 1 module. Thus, each character is 12 modules wide. Therefore, this barcode has a very low data density.

 

 

A "Msi" barcode. "1234567890" is a number encoded in the barcode.