System command family for Tappy devices.
For projects using the latest Android Tappy SDK, you should use the artifact:
compile "com.taptrack.tcmptappy2:commandfamily-system:2.1.1"
If your project is based on the earlier, deprecated TappyBLE SDK, the latest version you can use is
compile "com.taptrack.tcmptappy:commandfamily-system:0.9.0"