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Overview

In this quickstart, you’ll add Fingerprint to a new Vue 3 project and identify the user’s device. The example use case we’ll use for this quickstart is stopping new account fraud, where attackers create multiple fake accounts to abuse promotions, exploit systems, or evade bans. However, the steps you’ll follow apply to most use cases. By identifying the device behind each sign-up attempt, login, or transaction, you can flag and block suspicious users early. This guide focuses on the front-end integration. You’ll install the Fingerprint Vue SDK and initialize the client to generate a request ID to send to your back end for analysis. To see how to implement fraud prevention with this ID, continue to one of our back-end quickstarts after completing this quickstart.
Estimated time: < 10 minutes

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Prerequisites

Before you begin, make sure you have the following:
  • Node.js (v20 or later) and npm installed
  • Your favorite code editor
  • Basic knowledge of Vue 3 and JavaScript
This quickstart only covers the front-end setup. You’ll need a back-end server to receive and process the device identification event to enable fraud detection. Check out one of our back-end quickstarts after completing this quickstart.

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1. Create a Fingerprint account and get your API key

  1. Sign up for a free Fingerprint trial if you don’t already have an account.
  2. After signing in, go to the API keys page in the dashboard.
  3. Copy your public API key; you’ll need it to initialize the Fingerprint client agent.

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2. Set up your project

To get started, scaffold a new Vue app. If you already have a project you want to use, you can skip to the next section.
  1. Create a new Vite project with the Vue template:
Terminal
npm create vite@latest fingerprint-vue-quickstart -- --template vue
cd fingerprint-vue-quickstart
npm install
  1. Open the fingerprint-vue-quickstart folder in your code editor and you’re ready to go! To run your project, run:
Terminal
npm run dev
  1. In your browser, go to http://localhost:5173 (Vite’s default), and you should see the Vite welcome page.

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3. Set up your account creation form

  1. Before adding Fingerprint, create a new component at src/components/CreateAccountForm.vue with the following:
src/components/CreateAccountForm.vue
<script setup>
// Logic will be added later
</script>

<template>
  <div class="wrapper">
    <h1>Create an account</h1>
    <div class="input-group">
      <label for="username">Username</label>
      <input
        id="username"
        v-model="username"
        type="text"
        placeholder="Username"
        required
      />
    </div>
    <div class="input-group">
      <label for="password">Password</label>
      <input
        id="password"
        v-model="password"
        type="password"
        placeholder="Password"
        required
      />
    </div>
    <button :disabled="isLoading" @click="handleSubmit">
      {{ isLoading ? "Loading…" : "Create Account" }}
    </button>
  </div>
</template>

<style scoped>
.wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1rem;
  padding: 1rem;
}

input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.input-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

button {
  background-color: #f35b22;
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
</style>
  1. Import and add the component to your main view in src/App.vue:
src/App.vue
<script setup>
import CreateAccountForm from "./components/CreateAccountForm.vue";
</script>

<template>
  <CreateAccountForm />
</template>

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4. Install and initialize the Fingerprint SDK

  1. To integrate Fingerprint into your Vue app, first add the SDK via npm:
Terminal
npm install @fingerprintjs/fingerprintjs-pro-vue-v3
Note: This quickstart is written for Fingerprint SDK version 1.x
  1. Now that the SDK is installed, import and initialize it in your app’s entry point. Open src/main.js and import the Fingerprint plugin:
src/main.js
import { fpjsPlugin } from "@fingerprintjs/fingerprintjs-pro-vue-v3";
  1. Before mounting, initialize the plugin:
src/main.js
const app = createApp(App);

app.use(fpjsPlugin, {
  loadOptions: {
    apiKey: "<your-public-api-key>",
    region: "us", // Ensure this matches your workspace region
    // For more information, see https://docs.fingerprint.com/docs/regions
  },
});

app.mount("#app");
  1. Replace <your-public-api-key> with your actual public API key from the Fingerprint dashboard.
Note: For production, consider using Vite Env Variables to configure the key.

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5. Trigger visitor identification

Now that the Fingerprint client is initialized, you can identify the visitor only when needed. In this case, that’s when the user taps the Create Account button. When making the visitor identification request, you will receive the visitorId as well as a requestId. Instead of using the visitorId returned directly on the front end (which could be tampered with), you’ll send the requestId to your back end. This ID is unique to each identification event. Your server can then use the Fingerprint Events API to retrieve complete identification data, including the trusted visitor ID and other actionable insights like whether they are using a VPN or are a bot.
  1. Within the empty script tags in CreateAccountForm.vue, import Vue’s ref and declare username and password as reactive variables to track your form inputs. Also import the Fingerprint useVisitorData hook:
src/components/CreateAccountForm.vue
import { ref } from "vue";
import { useVisitorData } from "@fingerprintjs/fingerprintjs-pro-vue-v3";

const username = ref("");
const password = ref("");
  1. Initialize useVisitorData and access the returned values you’ll need:
src/components/CreateAccountForm.vue
const username = ref("");
const password = ref("");

const { data, isLoading, getData } = useVisitorData({}, { immediate: false });
This gives you:
  • getData(): A function to trigger visitor identification on demand.
  • data: A data store that holds the visitorId, requestId, and more details.
  • isLoading: A flag to monitor visitor identification progress.
By setting immediate to false you’re triggering device identification only when needed with the getData() method. Check our GitHub repo for available useVisitorData options.
  1. Define the submit handler to trigger identification when the user clicks Create Account:
async function handleSubmit() {
  await getData();
  if (!data.value) return;

  const { visitorId, requestId } = data.value;
  console.log("Visitor ID:", visitorId);
  console.log("Request ID:", requestId);

  // Send the requestId to your server
  // await fetch("/api/create-account", {
  //   method: "POST",
  //   headers: { "Content-Type": "application/json" },
  //   body: JSON.stringify({
  //     username: username.value,
  //     password: password.value,
  //     requestId,
  //   }),
  // });
}
In this function:
  • getData() is being called and Fingerprint is analyzing the visitor’s browser, the result of the identification will be stored in data.
  • The data object will include a requestId, which you can then send to your back end along with the username and password for your fraud detection logic.

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6. Test the app

  1. If your dev server isn’t already running, start it with:
Terminal
npm run dev
  1. In your browser, go to http://localhost:5173 (Vite’s default).
  2. If you have any ad blockers, turn them off for localhost. View our documentation to learn how to protect your Fingerprint implementation from ad blockers in production.
  3. Enter a username and password, then click Create Account.
  4. Open the developer console in your browser and you should see the visitorId and requestId in the output:
Output
Visitor ID: JkLmNoPqRsTuVwXyZaBc
Request ID: 1234566477745.abc1GS

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Next steps

To use the identification data for fraud detection (like blocking repeat fake account creation attempts), you’ll need to send the requestId to your back end. From there, your server can call the Fingerprint Events API to retrieve the full visitor information data and use it to make decisions and prevent fraud. Check out these related resources: