---
title: "Sites without Authentication"
url: "https://help.productfruits.com/en/article/sites-without-authentication"
language: "en"
last_updated: "2025-10-14T13:53:46.550Z"
---

# Sites without Authentication

Product Fruits works best after login. But if you want to implement Product Fruits to a site without authentication or before login, it is possible.

You still have to provide user information, Product Fruits won't start without a username. You can generate a random `username`, store in in browser's `localStorage` and use it later. 

This is an example of the username generator:

```javascript
function makeid(length) {
	let result = '';
	let characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
	let charactersLength = characters.length;
	for (var i = 0; i < length; i++) {
		result += characters.charAt(Math.floor(Math.random() * charactersLength));
	}
	return result;
}

let generatedUserName = localStorage.getItem('user');
if (!generatedUserName) {
	generatedUserName = makeid(8);
	localStorage.setItem('user', generatedUserName);
}
```

Later, when you initialize Product Fruits, use the `generatedUserName` variable for the `username` field of the Product Fruits user info object.

If the user logs in later and there is no reload (the login form and the following page work as a single page), call `productFruits.identifyUser({ username: '<<REPLACE>>' })` to re-identify the user.

**Please note**, that using Product Fruits on sites without authentication can cause some of these situations:

-   Users can see the same content multiple times as they can use different browsers or they will delete their browsing data.
-   Because of the previous issue, your monthly active user count might go over your quota, because one user can be tracked as multiple users.
-   When the user logs in, the same content can show again, because the user will be seen as a new user by Product Fruits. A potential solution to this issue might be using a custom property saying if it is an anonymous user or a logged-in user. Then you can use segmentation and (not) display the content.