Introduction

DEPRECATION NOTICE: Some endpoints will be deprecated on Q2 2022. Such endpoints are conveniently identified in the API definition section of this document.

The objective of this document is to introduce the das-FaceQR service, focusing on its characteristics usage modes and its relation with other Veridas products and applications.

The process described herein is protected by a patent.

das-FaceQR is a service which allows the authentication of a person via face biometry. This service is provided as a cloud-based or SaaS solution that can be consumed via APIs. Unlike das-Face -another Veridas’ face biometry service which, among others, allows to compare face images-, the process of biometric verification is performed as a comparison between a face image and an abstract representation of the face of the person stored in a biometric credential.

The face biometric credential is a mathematical descriptor obtained from the characteristics of the face in a face photo. This mathematical conversion from the face into a biometric vector is irreversible. Therefore, it is not possible to recover a person's face from the calculated biometric vector.

All the information needed to verify the identity of the bearer of the credential is contained in the credential itself. Veridas does not keep any information either when generating a credential or verifying it against the bearer’s face. These credentials are secure, as it is not possible for adversaries to modify their content without such modification being later undetectable.

A credential could be bundled in a QR code rendered in an image, or in a Passbook file. The latter is readable by many of the wallet applications available in the market for almost any mobile operating system. A screenshot of a Passbook file generated with dasFaceQR is shown below.

Section API Definition outlines all the parameters that can be used to tweak the captions and the contents that will be shown in the wallet.