Embed the JavaScript tag

The JavaScript tag (JS TAG) is a browser-level script that you add to a web page. It captures data about the browser, builds a unique identifier from that data, and sets the identifier as a session cookie named _azfp_sc. The browser sends cookies in every request it makes, so the identifier reaches your application with each one.

The script runs on the page you want to fingerprint, a process also known as JavaScript injection. It captures the following data from the browser:

Audio and video support.
Canvas rendering.
Access to device-level APIs, such as the accelerometer and the gyroscope.
Manufacturer’s data.
Timezone.
WebGL rendering.

Before it creates a cookie, the script checks whether _azfp_sc already exists. If it does, the script creates no new one.

Prerequisites

Access to the HTML source of the web page you want to fingerprint.
To serve your own copy of the script, a project folder that your domain serves.

Embed the script

Azion provides the script as a file that you can load from your HTML source. To load it from Azion, add this element to your HTML source:

<script src="https://assets.azion.com/global/bot-manager/client-fingerprint/azfp-1.0.0.min.js"></script>

You can also serve your own copy of the script. To do so:

Copy the code

Copy the code in the script file.

Create a JavaScript file with the code

In this example, the file name is fingerprint-script.js.

Add the file to your project folder

Load the file from your HTML source

Add this element to your HTML source:

<script src="https://example.com/fingerprint-script.js"></script>

Replace the values in the element as follows:

Value	Replace with
`https://example.com/`	Your domain.
`fingerprint-script.js`	Your JavaScript file name.

The script then sets the _azfp_sc session cookie in each browser that loads the page.

Next steps

Marketplace integrationsThe integrations you install from Azion Marketplace.Install Bot Manager LiteInstall Bot Manager Lite and run it on a firewall.