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Authenticity Checks

The Document Reader SDK provides numerous checks, representing the advanced security techniques to verify the document's authenticity and prevent its counterfeiting. See the overview table for details.

Authenticity check Processing parameter Default value
Image patterns checkImagePatterns true
Liveness checkLiveness true
Barcode format checkBarcodeFormat true
Portrait comparison checkPhotoComparison true
Photo embedding type checkPhotoEmbedding true
Security Text checkSecurityText true
IPI text checkIPI true
UV luminescence checkUVLuminiscence true
Protection fibers checkFibers true
IR visibility checkIRVisibility true
B900 IR checkIRB900 true
Extended MRZ checkExtMRZ true
Extended OCR checkExtOCR true
Axial checkAxial true
LetterScreen checkLetterScreen false

Liveness Checks

The "Liveness" validation comprises the set of checks to ensure the identity document is physically presented. See the table for all available liveness checks.

Liveness check Processing parameter Default value
Electronic device checkED true
Black and White Copy checkBlackAndWhiteCopy true
Hologram detection checkHolo true
OVI checkOVI true
MLI checkMLI true
Dynaprint checkDynaprint true
Geometry checkGeometry true

Enable or Disable Checks

Most authenticity checks are enabled by default. To enable or disable concrete authenticity checks, use their corresponding parameters with necessary values (true or false). For details, explore the Overview section. See the example below.

{
    "processParam": {
        "authParams": {
            "checkLiveness": false,
            "livenessParams": {
                "checkHolo": false,
                "checkED": false,
                "checkOVI": false,
                "checkMLI": false,
                "checkBlackAndWhiteCopy": false,
                "checkDynaprint": false,
                "checkGeometry": false
            },
            "checkImagePatterns": false,
            "checkPhotoEmbedding": false,
            "checkBarcodeFormat": false,
            "checkPhotoComparison": false,
            "checkSecurityText": false,
            "checkUVLuminiscence": false,
            "checkFibers": false,
            "checkExtMRZ": false,
            "checkExtOCR": false,
            "checkIRB900": false,
            "checkIRVisibility": false,
            "checkIPI": false,
            "checkAxial": false,
            "checkLetterScreen": true
        }
    }
}

By default, if the specific check is enabled but not performed due to some limitation, it's marked as WasNotDone. This applies only to the Photo Embedding Type and Liveness checks—if they are marked as WasNotDone, the overall security checks' status also shows up as not performed.

To override this behavior, use the strictSecurityChecks parameter. When enabled, this parameter marks security checks that don’t meet minimum requirements as Failed (instead of WasNotDone), which causes the overall security status to be failed.

{
    "processParam": {
        "strictSecurityChecks": true
    }
}

Next Steps