Splitit's Payment Form Modal is an iFrame that is triggered by a customizable Splitit Pay Button, which you add directly into your checkout flow. Once triggered, the Payment Form Modal allows a user to enter credit card information directly and securely, and after they are done, it yields control back to the checkout page, sending either a success or error message.
Shopper never leaves your website
The modal overlays your existing checkout and ensures that your shoppers never leave your website.
Very easy to implement on top of working solutions.