The Square Point of Sale API gives mobile applications the ability to open the Square PoS application, to process in-person payments using Square hardware. It allows you to build customized point-of-sale solutions or other applications that require payments that includes support for native and web apps on iOS and Android to process in-person payments using Square hardware. This is indirect access to this service. Please refer to the corresponding SDK below. Square enables developers to build customized solutions that accept payments online, in-person, or in-app to manage products and customers.