An iframe is a window which opens on your website, and Customer can confirm their identity directly on your website. It’s safe if your site has an SSL certificate. If your website doesn’t have an SSL certificate and you are not sure that card issuers banks 3D confirmation site is compatible with your site, we recommend enabling 3D redirect page option in Merchant Portal (it’s enabled by default).
You can change this setting in the Merchant portal:
- go to the sign-in page of Merchant Portal
- select E-Shop settings
Check Use redirect 3DS page.