Payer Authentication Developer Guide {#product-about-guide}
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This section describes how to use this guide and where to find further information.

Audience and Purpose
:
This guide is written for merchant application developers who want to use the REST API to integrate payer authentication services into their system. It describes the tasks you must perform in order to complete this integration.

    Implementing payer authentication services requires software development skills.

Scope
:
This guide describes how to use the REST API to integrate payer authentication services with your order management system. It does not describe how to get started using the REST API nor does it explain how to use services other than payer authentication. For that information, see the *Related Documentation* section.

Conventions
:
These special statements are used in this document:

    > IMPORTANT
    > An *Important* statement contains information essential to successfully completing a task or learning a concept.

    > WARNING
    > A *Warning* contains information or instructions, which, if not followed, can result in a security risk, irreversible loss of data, or significant cost in time or revenue.

Related Documentation
:
Visit the [Documentation Hub](https://developer.visaacceptance.com/docs.md "") to find additional documentation.

Customer Support
:
For support information about any service, visit the Support Center:

[https://support.visaacceptance.com](https://support.visaacceptance.com/ "") .