FEATURED GUIDE
Onboarding validation without unnecessary friction
Place the right check at the right moment, with accessible feedback and real recovery routes.
CLEAR SIGNALS. USEFUL IDEAS.
The Validation Journal
Ten practical guides to clearer data, better API contracts, and more human-friendly validation journeys.
The complete reading list.
Read in your feed readerOnboarding validation without unnecessary friction
Place the right check at the right moment, with accessible feedback and real recovery routes.
Read the guide
Driver’s license validation: a developer’s guide to clear signals
Compare structure, field consistency, source checks, and jurisdiction coverage without overclaiming.
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Validation API errors that developers and people can understand
Design stable reasons, useful next actions, and truthful messages for every incomplete outcome.
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Passport validation: what MRZ checks can and cannot tell you
Understand check digits, capture uncertainty, and the boundary between consistency and authenticity.
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Validation API vs. identity verification: know what passed
A clear framework for separating format checks, evidence, and the person behind a record.
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Legal name validation: design for real people, not rigid patterns
Preserve names, handle representations respectfully, and make comparison limits explicit.
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Home address validation without losing the details that matter
A practical guide to normalization, unit numbers, partial matches, and helpful correction flows.
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Data minimization for validation APIs: collect less, explain more
Plan inputs, responses, logs, test data, and retention without building an accidental identity archive.
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A validation API testing checklist beyond the happy path
Test response meaning, policy, stale results, recovery, and diagnostics—not just successful JSON.
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Mobile number validation: formatting is not possession
Separate parsing, numbering-plan signals, delivery, and evidence of control over a phone number.
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