MSI (bar code)

File Format
Name	MSI (bar code)
Ontology	Physical File Formats Bar codes MSI (bar code)

This article refers to the bar code. For the executable installer that shares the same extension, see Windows Installer.

MSI (or MSI Plessey or Modified Plessey) is a linear bar code symbology to encode digits, adapted from the Plessey system. Each digit has an associated sequence of 1 and 0 bits, which are encoded simply by a black bar for a 1 and a white bar for a 0, with consecutive bits of the same value becoming wider bars as they are together with no space between them.

Software

• Barcodesoft MSI Plessey
• DevExpress reporting

Developer libraries

• MSI patch to ZXing

Utilities

• Bar code generator: MSI
• MSI bar code generator
• Online barcode generator (supports many different formats)

References

• Wikipedia article
• Barcode Island article