How Age Verification Technologies Work: From ID Capture to AI-Powered Checks An age verification system combines multiple technologies to confirm a user's age reliably while trying to minimize friction. At the most basic level, systems can use self-declaration—asking users to click a checkbox or enter their date of birth—but effective protection against underage access requires stronger measures. Common technical approaches include document upload and optical character recognition (OCR), biometric facial comparison, database or registry checks, and third-party identity provider integrations. Document-based verification asks the user to submit an image of a government-issued ID, then runs OCR to extract name, birthdate and document number. Automated checks validate document templates, expiration, and…