The best technique for determining the validity of an ID is to use a combination of methods including visual inspection of security features, biometric checks (such as comparing signatures or using facial recognition), and verifying the information by asking the ID holder questions related to the ID. This comprehensive approach is often summarized in the F.L.A.G system, which involves:
- Feeling the ID for texture and tampering signs
- Looking closely at visual security features like UV marks
- Asking the holder questions to verify their knowledge of the ID information
- Giving the ID back while observing the holder's reactions
Modern validation also benefits significantly from technology like optical character recognition (OCR), machine learning algorithms for pattern recognition, and biometric verification to cross-check the data and detect forgeries in real time. Combining these techniques ensures a higher reliability in confirming the authenticity and validity of an ID compared to relying on a single method alone.
