Hello, is anyone using NFC tags with their Nexus 7? What are you using yours for? The idea looks cool to me, one in the car to run the sat nav app, one on my bedside table to turn to low power and turn on the alarm app etc, my work desk for something and so on. What do you reckon to getting some from a supermarket? can I perhaps use them? I can see I need the NTAG203 type, although large capacity ones are quite expensive so might start with some of these to play with. Has anyone any verified info on what happens to battery life with NFC turned on? I have searched for an nfc toggle but cannot find one, all I can find is power toggles and that brings up the nfc settings rather than toggles it.