A variety of Java virtual machines on ARM have been around for a long time. Nowadays, OpenJDK makes it easy and secure to receive and process data at all stages. Using modern expressive language Kotlin and Docker containers, we will program a simple, but secure gateway that controls a sensor. We'll demonstrate further data processing in the cloud as BigData and then visualization for end user using JavaFX. We will discuss additional features such as deployment and provisioning and also how the new release model of the Java platform is connected to security.