MSI10 (Mod 10)

MSI10 is the MSI variant that uses a single Mod 10 check digit for error detection. This is the most common MSI variant, providing basic error detection while maintaining simplicity.

Basic Usage

import { barcode } from '@stacksjs/qrx'

barcode('#barcode', '1234', { format: 'MSI10' }) // Result: 12344

[!NOTE] Image needed: Basic MSI10 barcode example

Mod 10 Checksum Calculation

The Mod 10 checksum is calculated as follows:

1. Multiply alternate digits by 2, starting from the right
2. Sum the individual digits of the products
3. Add the remaining numbers
4. The check digit is the number needed to make sum divisible by 10

Example:

Data: 1234
Step 1: 1 2 3 4 → (1)(2×2)(3)(4×2)
Step 2: 1 4 3 8
Step 3: 1 + 4 + 3 + 8 = 16
Step 4: Check digit = 4 (to make 16 + 4 = 20)
Result: 12344

Advanced Options

import { barcode } from '@stacksjs/qrx'

barcode('#barcode', '1234', {
  format: 'MSI10',
  width: 2,
  height: 100,
  displayValue: true,
  fontSize: 20,
  font: 'monospace',
  textAlign: 'center',
  textPosition: 'bottom',
  textMargin: 2,
  background: '#ffffff',
  lineColor: '#000000'
})

Error Detection

import { barcode } from '@stacksjs/qrx'

barcode('#barcode', '1234', {
  format: 'MSI10',
  valid: (valid) => {
    if (!valid) {
      console.error('Invalid MSI10 input')
      // Handle invalid input
    }
  }
})

Common Applications

1. Retail Inventory

   • Shelf labels
   • Price tags
   • Basic inventory control

2. Simple Asset Tracking

   • Basic equipment labeling
   • Location marking
   • Container identification

[!NOTE] Image needed: Real-world application examples

Best Practices

1. Input Validation

   • Verify numeric-only input
   • Check maximum length
   • Validate check digit

2. Implementation

   • Test scanner compatibility
   • Verify checksum calculation
   • Maintain adequate quiet zones

3. When to Use MSI10

   • Basic inventory tracking
   • Simple shelf marking
   • When single check digit is sufficient

Comparison with Other MSI Variants

Feature	MSI10	MSI11	MSI1010	MSI1110
Check Digits	1	1	2	2
Algorithm	Mod 10	Mod 11	Mod 10×2	Mod 11+10
Error Detection	Basic	Good	Better	Best
Data Length	Shorter	Shorter	Longer	Longer

[!NOTE] Image needed: Visual comparison of variants

Upgrade Path

If you need better error detection, consider upgrading to:

// Current MSI10
barcode('#barcode', '1234', { format: 'MSI10' })

// Upgrade to MSI1010 for double check digit
barcode('#barcode', '1234', { format: 'MSI1010' })

// Upgrade to MSI1110 for maximum security
barcode('#barcode', '1234', { format: 'MSI1110' })