Device Fingerprint

NPM Version NPM Downloads

device-fingerprint is the world's best browser fingerprinting JavaScript library. While not (yet?) as good, it's a free open source alternative to the market leading device-fingerprint. It is easy to use and easily extendable.

device-fingerprint is open source (MIT).

🙏 Please don't do evil. device-fingerprint is meant to be used for good. Use this to prevent scammers and spammers for example. If you see this library being used for evil, contact me.

Simple usage from CDN

Transpiled bundles are available now on JSDelivr.

Supported module formats:

And on the web page:

<script src="https://cdn.jsdelivr.net/npm/@guardhivefraudshield/device-fingerprint/dist/index.umd.js"></script>
<script>
DeviceFingerprint.getFingerprint().then(
    function(data) {
        console.log(data);
    }
);
</script>

<!-- or -->

<script>
import('https://cdn.jsdelivr.net/npm/@guardhivefraudshield/device-fingerprint/dist/index.esm.js')
.then(({ getFingerprint }) => {
    getFingerprint().then((data) => { console.log(data)})
})
</script>

You can also call DeviceFingerprint.getFingerprintData() to get a full JSON object with all its components.

Options

You can use the setOption method to change the behavior of the library. Currently it takes only one option.

option	type	example	what it does
exclude	string[]	['webgl', 'system.browser.version']	removes components from the fingerprint hash. An excluded top-level component improves performance.

example usage:

DeviceFingerprint.setOption('exclude', ['webgl', 'system.browser.version'])

Install with NPM

Installing from NPM:

npm install @guardhivefraudshield/device-fingerprint

and in your code

import { getFingerprint } from "@guardhivefraudshield/device-fingerprint";

To implement device-fingerprint in a Next.js app, you can use a component like this.

Build it yourself

Clone this repo and then run

yarn install
yarn build

Components included in fingerprint

audio fingerprint
canvas fingerprint
webgl fingerprint
available fonts and how they render
videocard
browser languages and time zone
browser permissions
available plugins
a ton of screen details including media queries
and a bunch of smaller things