1d-retail
MSI / Plessey (MSI Plessey)
Continuous numeric linear symbology widely utilized in supermarkets and retail stores for shelf-edge price labeling, warehouse rack tags, and stock inventory counting.
Governing Specification: MSI Data Corporation Standard
Data Format & Required Fields
Encodes numeric digits 0-9 with flexible check digit schemes (Modulo 10, Modulo 11, or dual Modulo 10).
Allowed Character SetNumeric digits only.
Payload Length Rule Between 1 and 40 characters
Check Digit / Checksum Rule Requires a verified modulo-10 check digit to prevent scanner misreads and data transposition errors.
Example Valid Format
12345678Industry Guidance & Practical Applications
- Retail grocery and department store shelf-edge price tags
- Warehouse storage rack location markers and aisle bin tags
- Stockroom handheld inventory counting and replenishment
Packaging & Scanning Notes: Standard for electronic shelf tags and in-store inventory audit scanning.
Symbol Constraints & Label Guidelines
- Purely numeric data; lower data density than Code 128.