This article explains what is meant by the "Elo SDK"

Below information defines the Elo SDK

APK (Android Package Kit) – the application the customer writes to run under Android on Elo hardware

Peripheral – external piece of hardware that gets plugged into the Elo hardware, or integrated hardware that is not a standard component of the Android platform (such as cash drawer or barcode reader on Paypoint)

Android SDK (Software Development Kit) – a set of software libraries, interfaces, and tools that customers use in their APK to communicate with and control the standard Android system

Elo SDK – software that we provide to the customer for use in their APK that controls Peripherals on the Elo platform

• Java library that is included by APK when it is built
• Documentation for components and calls in the library
• Sample application that provides an example of correct usage of our library

API (Application Programming Interface) – the specification describing precisely how the user’s application interacts with our library.  Not technically interchangeable with the term SDK