This applies to the iTrack Dock
The iPad inherently heats up when being charged and the processor is being stressed, especially on the newer iPads with the more powerful processors. Both of these things happen when an iPad is use with the iTrack Dock therefore some heat is expected and shouldn't be of concern.
We've extensively tested the iTrack dock with the iPad running at temperature and have not experienced any issues.
The iPad has a built in feature where it shuts itself off when there's excessive heat and unless you see this it's running safely within Apple's specification.