The Square Register In Person Payment Android Sample Code by Square demonstrates how API interaction can assist to process credit card payments. Registration for API Key available at https://docs.connect.squareup.com/articles/register-api-android/#registerapisetup
Apple this week made the Payment Request API available for Apple Pay. The W3C-developed API works in Safari 11.1 on MacOS and Safari on iOS 11.3, allowing merchants and retailers to conduct transactions through Apple Pay, rather than alternatives such as credit/debt cards or PayPal.
SurchX, today announced that its fee recovery product is now available to merchants operating in the United States. SurchX’s API uses sophisticated algorithms that enable retailers to securely pass merchants’ fees for credit card transactions onto the customer.