> For the complete documentation index, see [llms.txt](https://docs.simicart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simicart.com/features/gaining-new-users/effortless-login-with-otp.md).

# Effortless Login with OTP

To enable the **Login with OTP** feature in your SimiCart-powered mobile app, you’ll need to connect it with Shopify’s Customer Account API via the Headless app developed by Shopify.

## Step 1: Install the Headless App

Go to the [**Headless**](https://apps.shopify.com/headless?st_source=autocomplete) app on the Shopify App Store and click **Install**.

<figure><img src="/files/EX2yoJqx56hN3Qb6q7uc" alt=""><figcaption></figcaption></figure>

## Step 2: Create a Storefront

After installation, open the **Headless** app from your Shopify Admin and click **Create Storefront**.

<figure><img src="/files/hXFJcDfV71tYMaBby8Mv" alt=""><figcaption></figcaption></figure>

## Step 3: Configure & Retrieve Client ID

In the Shopify Admin, open the **Headless** app. Scroll down to the **Manage API access** section, where you'll see both the *Storefront API* and *Customer Account API* options. Locate **Customer Account API**, then click the **Manage** button next to it, as shown in the screenshot below.

<figure><img src="/files/bxWJPjpICWT79BEc5Rto" alt=""><figcaption></figcaption></figure>

On the next screen, change the **Client type** to **Public (Mobile app)** and click **Save**.

<figure><img src="/files/TbE26AMvaflU7ohf8jDW" alt=""><figcaption></figcaption></figure>

After saving, copy the **Client ID** in **Customer Account API credentials** section below. You’ll need it in the next step.

<figure><img src="/files/xEjPlWvfLAXLmJwGjJo9" alt=""><figcaption></figcaption></figure>

## Step 4: Enable Login with OTP in SimiCart

In your SimiCart Dashboard, go to the **Features** section and select to configure **Login with OTP**.

<figure><img src="/files/LxDRD5Ogn2jTSakrhuFb" alt=""><figcaption></figcaption></figure>

Paste the **Client ID** you copied from the Headless app into the **Client ID** field, then click **Check connection** to verify the authentication & enable the feature for your mobile app.

<figure><img src="/files/QNS65zNIBvUwuvmeUxIX" alt=""><figcaption><p>Paste the <strong>Client ID</strong> you copied from the Headless app into the <strong>Client ID</strong> field</p></figcaption></figure>

<figure><img src="/files/iUDTndmyyk42HpjXa9I2" alt=""><figcaption><p>Click <strong>Check connection</strong></p></figcaption></figure>

<figure><img src="/files/HBbqw5o0VlZ66VYZ86F8" alt=""><figcaption><p>And done!</p></figcaption></figure>

**Note:** This feature can only be enabled if you use Shopify’s recommended version of customer accounts for your store.


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