Implement age verification using an ID document date-of-birth extraction and a real-time threshold check without storing raw biometric data
domain: agecheck.eu · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Capture the document image and send it to a document parsing API to extract the date_of_birth field from the MRZ or visual inspection zone
Compute the user's age server-side from the extracted DOB and the current date, applying the appropriate jurisdiction's legal age threshold
Return only a boolean age_verified response to the frontend — do not persist the extracted DOB or document image beyond the verification transaction
Log only a non-reversible age-tier indicator (e.g., over_18: true) with the transaction timestamp for compliance records
If the document extraction fails or the DOB field is absent, route to a fallback method (credit bureau age check or selfie-based age estimation) per your regulatory requirement
Known gotchas
Storing full DOB or document images to satisfy audit requirements may conflict with data minimisation obligations under GDPR — hash or encrypt with short retention periods
Age at time of verification differs from age at time of transaction; compute age at the moment of the regulated action, not at onboarding
Selfie-based age estimation alone does not meet the evidential standard for most regulated age-gated services — document verification is typically required
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