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MRZ Blog
Guides, tips, and deep dives about Machine Readable Zones, ICAO 9303, check digits, and identity document verification.
Featured· 6 min read
6 Best Veriftools Alternatives
Veriftools was seized by the FBI and Dutch police. Here are the 6 best alternatives for identity PSD templates and MRZ tools in 2026.
ComparisonTools
· 5 min read
How MRZ Check Digits Work (with a worked example)
The 7-3-1 weighting rule explained step by step, including how the composite check digit catches errors single fields miss.
Check digitsValidation
· 6 min read
Understanding the MRZ: A Practical Intro to ICAO 9303
What the Machine Readable Zone actually encodes, why it's printed in OCR-B, and how border systems read it in milliseconds.
MRZICAO 9303Basics