| Term | Working definition |
|---|---|
| Authenticity | Whether appropriate evidence supports a document's claimed origin and integrity |
| Counterfeit | A fabricated item presented as though it came from the claimed issuer |
| Alteration | A change to relevant content after its original issue or creation |
| Holder binding | The connection between identity evidence and the person presenting it |
| MRZ | Machine-readable zone: a constrained text area used on specified travel-document formats |
| Check digit | A value computed from a data element to check certain inconsistencies |
| OCR | Optical character recognition: extracting text from an image |
| Fixture | Predictable test data with a stated expected result |
| Specimen | An example marked as a sample rather than usable identification |
| KYC | Know your customer: a context-dependent set of customer-identification and due-diligence processes |
For detailed document-security vocabulary, consult the official PRADO glossary. Its definitions relate to feature classes and document inspection; they do not authenticate a particular submitted image. PRADO glossary of document-security terms