What Is a Java Card™?

SPOT (Small Programmable Object Technology) is a small wireless device that runs Java programs. The SPOT contains a number of sensors to monitor its environment, a set of colored LEDs for communication with the outside, and two buttons for basic feedback. I use LEDs to show the status of the build. Some SPOTs can be connected through a USB cable as a base station, and other SPOTs can access resources on the workstation, such as databases or web applications, through this base station.