Check the spec
Charset, lengths and check-digit rules for this symbology are listed above — the form enforces them instantly.
Free tools · Barcodes
Generate MSI / Modified Plessey codes that scan.
Numeric inventory barcode with one or two Mod-10 check digits. Type the payload for MSI / Modified Plessey below — validation, check digits and a local scan-test run in your browser before anything exports.
Barcode generator
Type text, get a symbol.
Runs locally in your browser. Nothing is uploaded; the field clears after ten idle minutes.
Advanced (GS1, checks, profiles, retail add-ons, supply-chain carrier)
Style (readable text, bar height, export size)
Bar height stretches bars vertically, which scanners ignore (only horizontal timing matters). The SVG download keeps the engine's exact geometry.
Specification
| Standards | MSI/Modified Plessey |
|---|---|
| Character set | Digits only, 1–14 digits including checks. One Mod-10 check is the default; two are optional. |
| Lengths | 1234567 |
| Check digits | One Mod-10 check by default; optional second Mod-10. |
| Quiet zone | 10X quiet zone. |
| Capacity | Digits, 1-14 including checks here. |
Usage
MSI / Modified Plessey labels industrial parts, documents and work orders: print it on badges, boards and bins where rugged 1D scanners operate.
- MSI / Modified Plessey on asset tags for workshop tracking
- MSI / Modified Plessey on work-order paperwork for line-side scanning
- MSI / Modified Plessey proofs exported as PNG for quick sharing
Shape
Pros
- MSI / Modified Plessey tolerates industrial printers, labels and badge stock.
- Case folding, padding and check rules are explained before encoding.
- PNG and SVG exports cover both quick sharing and print.
- The self-verify readout shows exactly what a scanner will observe.
Cons
- MSI / Modified Plessey is wider per character than 2D codes for long payloads.
- Dense narrow bars demand close, steady photography when verifying.
- Damaged or smudged labels lose characters with no error correction.
- Colored or low-contrast prints scan poorly.
Form requirements
- Enter 1234567.
- Digits only, 1–14 digits including checks. One Mod-10 check is the default; two are optional.
- The symbol is decoded again locally before preview and downloads unlock.
Sources
- AIM symbology specifications (AIM)
Related formats
Keep exploring.
How it works
Three steps, all on your device.
The same engine that reads barcodes writes them — every symbol is decoded again before you see it.
Type the payload
Every symbol is validated and decoded again on your device before it is shown.
Download and print
Take a resolution-independent SVG for print or a PNG for sharing. Nothing is uploaded.
Questions
MSI / Modified Plessey Generator & Specs, answered.
If you manage servers by hand, see the engineering services behind this tools series.
What can I type for MSI / Modified Plessey?
Digits only, 1–14 digits including checks. One Mod-10 check is the default; two are optional. Example: 1234567.
How does MSI / Modified Plessey handle check digits and printing?
One Mod-10 check by default; optional second Mod-10. 10X quiet zone. Export SVG for print and PNG for sharing; both render on your device.
Is my data uploaded anywhere?
No. Encoding and verification run entirely in your browser — the page makes no network requests with your data, stores nothing, and wipes the field after ten idle minutes.
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