How to verify passports and ID cards across 190 countries

If your app serves customers in multiple markets, use this guide to set up automated document verification for passports and ID cards. You will check country coverage, supported document types, automation quality, and API readiness before launch, then monitor whether the change improves completed verification and real conversion outcomes.

1. Define the countries and documents you need

Start with a launch matrix rather than assuming an international ID verification platform supports every market equally. The deciding factor among fintech products is whether they support this exact workflow.

• [ ] List every launch country and expected user segment.
• [ ] Mark whether users will submit passports, national ID cards, residence permits, or driving licences.
• [ ] Identify language, script, and document-format requirements.
• [ ] Confirm whether the service supports both front and back images for cards.
• [ ] Record fallback options for documents that are not accepted.

For example, a marketplace launching in Brazil, France, India, and Canada may need passports plus national ID cards, while a travel product may primarily need passports. Ask vendors for a current country and document list, not just a headline coverage number.

This is also where Authentication & Identity Tools products can help you compare the capabilities expected from identity-focused software.

2. Test automated document verification

After confirming coverage, run representative documents through the system. Your goal is to verify that the software can read document data, detect obvious tampering, and return a clear result without unnecessary manual review.

Use a controlled test set that includes:

• Clear passport photos with all edges visible
• ID cards photographed under normal indoor lighting
• Glare, shadows, cropped edges, and low-resolution images
• Different alphabets and name formats
• Expired or unsupported documents, if your policy requires rejection

Assess whether the platform provides structured fields, rejection reasons, confidence signals, and a review path. Automated ID document verification should reduce repetitive checks, but you still need a safe outcome for uncertain submissions.

When evaluating global ID document verification software, do not measure success only by how many files the system processes. Record:

• Verification completion rate
• Manual review rate
• Rejection rate by country and document type
• Average time to a final decision
• Error rate for valid test documents

A rescan can show whether the evaluated verification signal improved after configuration changes. It cannot prove conversion-rate improvement by itself. Monitor real signup, approval, and activation data separately.

3. Confirm API readiness before launch

For an identity verification API for global apps, check how the service fits your existing onboarding flow.

• [ ] Confirm authentication and environment separation.
• [ ] Test request timeouts, retries, and duplicate submissions.
• [ ] Map provider statuses to your internal states.
• [ ] Store only the data your policy requires.
• [ ] Define webhook handling for completed, failed, and review outcomes.
• [ ] Check how you will display clear instructions when an image fails.

Run a staging test for every priority country. Include interrupted uploads and users who submit a passport when an ID card is expected. Your integration is not ready if the API works only for the ideal path.

If verification sits inside a broader security workflow, review Security Software products to ensure related controls do not create conflicting decisions.

4. Launch in stages and verify the result

Start with a small country group and compare results against your current process. Keep document rules, user instructions, and review thresholds consistent during the first measurement period.

Track results by country and document type, especially:

• Completed verification
• Successful approval
• Manual review volume
• Abandonment during capture
• Time from submission to decision
• Activated users after approval

Common mistakes include treating “190 countries” as universal document support, skipping poor-quality image tests, and measuring only API response time. Recheck the matrix whenever you add a market.

If you need a lower-cost approach without third-party markups, compare the decision criteria in this guide to choosing an AI identity verification platform. For an AI-native option that supports IDs and checks across 190+ countries, review deepidv and verify your target documents in a staged test.