Square Register Android SDK is written in Java to support the implementation of the Square Register API. It hastens the development of Android-based POS apps that respond to Square’s swap, dip, or tap payment registers.
Google has introduced a one-click payment experience via a new Payment Request API. The API eliminates the need for a traditional checkout experience by handling the payment experience through a simple API call. The service is not a payment method, nor does it integrate with payment processors.
This article is the third of a three part series from MLSDev that shows you how to build an eCommerce API using Ruby on Rails. In this part, readers are shown how to secure their online store by implementing registration and authorization. A Github project accompanies this series.