---
title: "URL-Based Tag"
description: "The landing page for URL-based tags"
sidebar: false
---

You've reached this page because you navigated to an NFC, QR Code, or other URL-based tag in the format `https://www.home-assistant.io/tag/{tag}`. When the Home Assistant app is installed, it will [handle the tag](https://companion.home-assistant.io/docs/integrations/universal-links/).

## iOS

If you arrived here after scanning a tag on iOS, and you have the [Home Assistant Companion App](https://companion.home-assistant.io) installed, you may need to activate Universal Links:

1. Long-press on [this link](https://www.home-assistant.io/tag/example_from_documentation)
1. Choose "Open in 'Home Assistant'"
1. Attempt to scan the tag again

If you do not have it, you must [install the iOS app](https://apps.apple.com/us/app/home-assistant/id1099568401?mt=8) for these tags to function.

## Android

If you arrived here after scanning a tag on Android, and you have the [Home Assistant Companion App](https://companion.home-assistant.io) installed, you may need to change the link settings.

1. Launch Settings and navigate to "Apps & Notifications", revealing the "Advanced" section if necessary
1. Navigate to "Default apps" and then "Opening links"
1. Open the "Home Assistant" settings and choose "Clear defaults"
1. Attempt to scan the tag again, choosing to open in Home Assistant

If you do not have it, you must [install the Android app](https://play.google.com/store/apps/details?id=io.homeassistant.companion.android) for these tags to function.
