# Card Payments with 3DS

To perform card payments using 3DS flow with mobile SDKs, complete the following steps:

1. Store the [card capture key](/online-payments/api-integration-methods-auth-and-endpoints/secure-card-capture-key.md) on your backend and pass it to the mobile app at the start-up phase or when the payment is initialized.
2. Your app will send a call to **Verifone SDK** to display the **Card Form.** The following information should be passed to the **Card Form**: card capture key, price, and the option whether to include the stored card in the **Card Form** or not. **Verifone SDK** will provide your app with the encrypted card data, shopper name and card brand. Send the encrypted data along with additional information about the order to the backend.
3. Initiate a [Create JWT](/api-reference/open-api-references/ecommerce/token-management.md) transaction with the encrypted data.
4. Receive the **JWT** from your backend.
5. Send the **JWT** back to the SDK to complete the 3DS setup. After the setup is complete, a **device ID** will be generated.
6. Send the **device ID** to your backend.
7. Perform a[ lookup request](/api-reference/open-api-references/3d-secure.md) using the **encrypted data** and the **device ID.**
8. The 3DS API will return a **payload** and **transaction ID.**
9. Forward the **payload** and **transaction ID** to the SDK to complete the authentication.
10. If the authentication is successful, an **authentication ID** will be generated. After the ID is generated, send it to the backend.
11. Initiate a [JWT Validation ](/api-reference/open-api-references/3d-secure.md)with the **JWT** and **authentication ID**. Continue with the standard card transaction.

<div data-with-frame="true"><img src="https://verifone.cloud/sites/default/files/inline-images/3DS%20Card%20Payment%20Flow%20Diagram.PNG" alt=""></div>


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