How do I connect to the payment gateway to submit transactions?
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Thank you for the info here, very interesting and helpful to me, I have to say. Which payment gateways do you like using for such eCommerce websites, by the way? I like those from https://theappsolutions.com/blog/development/ecommerce-payment-gateway-comparison/ and I recommend you to take a look at the article there too. I think you will find it interesting to you
Card Present (CP) integration is designed for developers and providers of point-of-sale (POS) systems and retail payment solutions. This method connects via Advanced Integration Method using a Secure Sockets Layer connection. CP solutions may be developed so that retail and mobile merchants need only to purchase a ready-to-install POS solution or device. For a full description of this method, please review the Card Present Implementation Guide.