The MasterPass Merchant Checkout .NET SDK by MasterCard interacts with the API to implement checkout transactions into mobile projects. Along with the SDK, developers can find a sample application and a sandbox to practice with the different possibilities that the SDK could offer.
This week Google announced support of three new APIs in it's upcoming beta release of Chrome 61. These APIs, integrated from existing W3C standards, include the Payment Request API for making payment checkouts easier, the Web Share API for implementing native sharing capabilities and the WebUSB API.
From billion dollar companies to the neighborhood coffee shops, merchants of all sizes are seeking new ways to offer secure and affordable mobile payments systems that expand their ability to conduct business. The PayPal API got its start this way, first with online auctions, then with thousands of websites and individuals. It's now one of over 150 payment APIs, many of which exist outside of traditional finance.