Evidence Verification methods 

After an evidence is submitted, several verifications can be performed to validate it. The result of all the verifications is given by the evidence score.

The different type of verifications performed and the evidences they apply to are listed below:

Optical Document Authentication (Doc Auth.) 

Used to authenticate the submitted document and extract data (evidence holder's attributes, including photography when applicable, and evidence's details) based on digital image processing.

The Doc Auth. verification is mainly performed for the following category of evidence:

  • ID DOCUMENT
  • DOCUMENT

Adjudication 

When an identity document is sent to adjudication, a human operator verifies that the document image has not been manipulated, including a photograph substitution, characters replaced, and inconsistency with reference, and that this is not a paper or a screen copy. In case the evidence is rejected, the operator provides the rejection reason and an indicator will be created accordingly.

The adjudication can be used for the following situations: - to mitigate fraud risk (Doc Auth has raised some risks and the operator can mitigate them) - to verify features that cannot be detected by automated measures - to mitigate or confirm the automatic biometric matching (and potentially increase the score of the evidence).

The adjudication verification is mainly performed for the following category of evidence:

  • ID DOCUMENT
  • USER_VERIFICATION

Issuer Record Verification 

For some evidence, it is possible to check the evidence directly with it's issuer. This often takes the form of data comparison against a government agency database, and is also known as a Government Identity Verification (GIV). When applicable, the evidence provided by the user is checked against the issuer's record.

The issuer record verification is mainly performed for the following category of evidence:

  • ID DOCUMENT

For more details on what evidences can apply to an Issuer Record Verification, see the dedicated API, section Configuration Reader

Biometrics Verification 

This verification method compares a Portrait (candidate image) against the portrait from the Identity Document (Reference image). The matching is performed in two steps:

  1. checking the quality of both images
  2. matching candidates against reference

The verification can only be performed if a portrait and an identity document are submitted.

NFC verification 

Is done by reading the data directly from the NFC chip within the document and extracting information it contains about its owner.