> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mattildapayments.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 3-D Secure

Our system has a **Universal 3-D Secure** solution that provides merchants with a
flexible way to integrate 3-D Secure with various levels of complexity.
Universal 3-D Secure will automatically handle the device fingerprinting,
redirecting the buyer, as well as handling the different 3-D Secure nuances
between the different payment services.

Additionally, our system supports **Dynamic 3-D Secure**, allowing you to dynamically
skip or force 3-D Secure based on anti-fraud decisions, cart items, or any other transaction data.

There are currently 3 ways to integrate 3-D Secure.

* [Embed](/guides/features/3ds/embed) will automatically detect 3-D Secure for a
  transaction and handle all the user interactions to complete the transaction.
* [Hosted 3-D Secure](/guides/features/3ds/hosted) offers 3-D Secure via our API, allowing
  you to capture your own card data but then rely on our hosted 3-D Secure
  to handle the user interaction.
* [External](/guides/features/3ds/external) 3-D Secure data can be passed to us if you
  want to create your own card checkout experience including your own 3-D Secure
  integration.