Of course not
No, I am not recording them at the keypad. For instance, photo booths. Customers swipe their card to pay for the service and then the video recording starts in the booth, not at the paypoint. Later customers can get on my website and watch the footage that they have paid for.
My business idea is similar to that. I am not willing to state my business idea as it is currently not being done anywhere and it is my idea. I just need to know how to start the video recording at the appropriate time. Also, I said minutes, not seconds.
I can use motion detection to send the video and then delete sections I don't need, but seems much more efficient to have the debit machine talk to the camera.