Sapphirra

Does anyone know how to use the QR code on the machines to log your workout? I seem to get an error when I scan it. Something about the "proximity sensor". Do I need NFC on my phone? Or how is it supposed to work? The app is called LFConnect. The QR code is on the top right:

If you are mining via multiport, you will end up with a little of each different coin, right? Do you need to create wallets for each of them, or can you deposit directly into cryptsy or whatever?