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What Is Face Authentication?

Face authentication is a biometric verification method that utilizes the unique facial features of an individual to grant or deny access to systems, applications, or physical areas. It is a subset of facial recognition technology and is primarily used for verification purposes.  Once a user’s identity verification is approved in the iDenfy system, they are eligible to proceed with Face Authentication. During the session, the user takes a selfie, which the system compares against the selfie from the original identity verification. 

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Safety Features

The selfie taken during Face Authentication is compared to the selfie taken during the identity verification check. The safety measures taken to prevent fraud: 
  1. Face matching.  The process of comparing a selfie photo taken during a face authentication session with a selfie from the identity verification. 
  2. Passive liveness. The process of checking the liveness of the user’s face image (selfie). You can adjust the probability threshold in the settings to control whether the submitted image is genuine or taken from a screen. Modifying this value lets you tune the sensitivity for detecting spoofed or manipulated images. Contact iDenfy to enable this feature.
  3. Image detection. The process of comparing images taken in the previous face authentication sessions in order to determine the uniqueness of each image. This safety measurement is enabled by default.

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Integration

  1. Mobile SDK. Face authentication can be integrated with mobile SDK. Instructions here.
  2. iFrame. For more details regarding the integration, please visit documentation.

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Notifications

The notification of a completed face authentication session can be created on iDenfy Dashboard: Settings → Notifications (How to create notification). Webhook notification example: { “id”: “ebd19964-0899-4bfa-b14e-95e84214dc26”, “scanRef”: “fb5885c5-10fe-4e24-ba2e-6c3847fafbdd”, “clientId”: “6334bfbf-ab4c-4a6e-b887-98784bb4b2fe”, “status”: “SUCCESS”, “token”: “uFrYLi9HRDOyjTmivKXMRdCytnXZrUYOjozNrrWP”, “type”: “AUTHENTICATION”, “method”: “FACE_MATCHING”, “facePhoto”: null }

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Dashboard Guide

Find all the necessary information on the iDenfy Dashboard below: 
  1. Face authentication list page. The page displays the whole list of proceeded face authentication sessions that are completed and pending. This page is under ID verifications → Face authentications. 
  2. Face authentication detailed view. The page displayed detailed information about specific face authentication. To view the detailed list, simply click the full name or the arrow.
iDenfy Face Authentification Information.png
  • There are identity verification and face authentication images that have been compared. 
  • The user information card contains identity verification information and the hyperlink to a particular person’s identity verification. 
  • The authentication information contains information about the particular face authentication session:
  • Status - authentication can be successful (approved) or unsuccessful (denied). 
  • Finish time - the timestamp of when the authentication has been finished. 
  • Face authentication ID - the unique number of face authentication. 
  • Token - the face authentication session token. 
  • Client ID - the client ID taken from identity verification.
  • Type - the type of Face authentication: 
  • Authentication - general face authentication. 
  • Method - the method used to authenticate: 
  • Face matching - comparing the selfies. 
  • Match ratio - the score of face comparison. For a successful match, the face match ratio must exceed 50%.
  • Fail reason - the unsuccessful authentication fail reason: 
  • FACE_NOT_FOUND
  • TOO_MANY_FACES
  • FACE_ANGLE_TOO_LARGE
  • PROBABILITY_TOO_SMALL
  • FACE_TOO_SMALL
  • FACE_CLOSE_TO_BORDER
  • FACE_TOO_CLOSE
  • FACE_CROPPED
  • FACE_IS_OCCLUDED
  • EYES_CLOSED
  • FAKE_CAPTURE
  • DUPLICATE_IMAGE
  • FAKE_FACE
  • FACE_MISMATCH
  • Passive liveness probability - the score of the liveness of the selfie.
  1. The identity verification and face authentication. If the specific identity verification contains a face authentication session, that has been done. Find the information in the footer of the identity verification by clicking 3 dots and selecting Face authentication.
iDenfy Linked Face Authentifications.png

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White-Labeling

The face authentication uses identity verification personalization for white-labeling options. Here is the information. AD_4nXej7r60pPTQM41HW-v1Zb6yweDYHnguhu-iGd4m-QX9oHzdjMLbMsKdZFLXA0cJrLD-pioO1pSATv11b4uVlYyJ8O_yjnrOJ9VqgeP9kuBOC9ziXFOcTAUbZTv9INkFMZQSnG-E-key-azylXkVeMoA_7ChFcy3Fz7NT iDenfy Linked Face Authentifications_2.png

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Testing

To test face authentication:
  1. Open the Identity Verification interface and navigate to the footer.
  2. Select the three-dot menu, then select Face Authentication.
  3. In the pop-up, select Create.
  4. Copy the generated session URL for use.