i want to know if there is a payment gateway that processes transcation on the checkout page without using iframe or without redirecting to a hostedpay page using api that is already found in cs cart.
or any one knows how to process payment on the checkout page buy asking customer different infomations such as phone number and providing a button where the customer can send an api request to the payment gateway from the checkout page to get "otp" from the payment gateway and then finally place an order by providing the "otp" on checkout page to send it the the rest of the request paramater to the payment gateway to place an order.