Integrate Moneris PINpad to B2B Commerce Cloud

We would like to request for an addition feature with our current payment gateway Moneris in one of our microsites. We would like to integrate Moneris PINpad with Optimizely to cater on-site payment transactions. I have attached the API documentation and Moneris P400 PINPad User Guide for your reference and idea.

Sample Scenario:

Once the user is on ReviewAndPay page where you can input payment details. We would like the user to have another payment method which is CreditCard (on-site). When this option is selected, this will trigger the PINPad to display the total amount that needs to be paid by the customer and also will allow customer to tap his/her credit card to the PINPad to proceed in paying the displayed amount due.