3DS Iframe

In the context of 3DS (3-D Secure) and checkout integration, an “iframe” is an HTML element that allows embedding one web document inside another. This is widely used for incorporating third-party web content, such as payment forms or security systems, directly on an e-commerce checkout page.

For 3DS, an iframe typically is used to display a pop-up authentication window where the user is prompted to enter additional credentials for verification. This could be a static password, a temporary code sent via SMS, or a biometric authentication request, depending on the card issuer’s security system.

The use of an iframe allows for:

1. Security: The 3DS authentication takes place on the bank’s side, providing a high level of security as the sensitive information of the user is not directly transmitted to the merchant.
2. Convenience: Customers can complete the verification process without navigating away from the page or site, which can increase the likelihood of completing a purchase.

Using an iframe for checkout integration is a popular solution as it combines user convenience with compliance with strict online transaction security requirements.