[jkoritzinsky]

I saw SuperScouter mentioned in the OP here, so I'll chime in. It uses Google Protocol Buffers to transfer data. Over HTTP, it sends the data in binary, so it is extremely efficient (less than half the size). Since Protocol Buffers do not transfer their structure information with them, that space is not needed. Also, because it is a binary format it ends up much smaller for numerical entries (which are pretty common I would think)


Additionally, if you use QR codes, you will spend nothing on data (but make sure that you transfer relatively often. Don't want the QR code to run out of space to transfer the data).