---
title: Installing BlueCheck On Shift 4 Shop
slug: installing-bluecheck-on-shift-4-shop
description: The installations instructions for installing BlueCheck's age verification app onto your Shift 4 Shop store.
docTags: 
createdAt: 2023-07-10T15:12:05.507Z
---

**Note: BlueCheck only supports the single page checkout in Shift 4 Shop.**

1. Ensure that you are using single page checkout. Navigate to **Settings -> General -> Store Settings **and select the **Checkout **tab. Make sure that **Single Page Checkout **is enabled (if not, please enable it and save). 
2. Confirm what checkout version you are using. On the same page as step 1, look at the **Checkout Style **dropdown to see if you are using **Checkout V1** or **Checkout V2**. If you are using **Checkout V1** you will need to edit `checkout-singlepage.html` in step 4. If it shows **Checkout V2**, you will need to edit `checkout-singlepage-v2.html` in step 4.
3. Navigate to you theme files by clicking **Settings -> Design -> Theme & Styles. **Click the **Open Template Editor** button and select `templates/common-html5` from the dropdown in the top right.
4. Edit the checkout file you are using (either `checkout-singlepage.html` or `checkout-singlepage-v2.html` depending on the checkout version) by clicking the gear icon to the right of the filename. In the file editor, add the following script at the top of your checkout template file. Replace YOUR\_DOMAIN\_TOKEN\_HERE with your domain token. You can find your domain token on the [Installation Page](https://merchant.bluecheck.me/installation) of the BlueCheck merchant portal. 

```javascript
<!-- BlueCheck Age Verification -->             
<noscript><meta http-equiv="refresh" content="0;url=https://verify.bluecheck.me/noscript"></noscript>    
<script src="https://verify.bluecheck.me/platforms/threedcart/js/AgeVerification.js?domain_token=YOUR_DOMAIN_TOKEN_HERE"></script>
<!-- End BlueCheck Age Verification  -->
```

**Note:&#x20;**&#x49;f after you have completed the installation the verification doesn't appear to be loading or active, you may need to whitelist our script by contacting Shift4Shop. To whitelist the script please send a support ticket to Shift4Shop asking to whitelist `https://verify.bluecheck.me/platforms/threedcart/js/AgeVerification.js?domain_token=YOUR_DOMAIN_TOKEN_HERE` and `https://js.pusher.com/4.3/pusher.min.js`