actually I agree with this thesis.

That is why  I propose to use NFC tags.
They don't need batteries. they are passive devices. It's assumed that the recipient is merchant so he should have some active device (NFC terminal).

But using NFC active Smartphone will be good alternative for those individuals who want to transfer their bitcoins independently.

For those who doesn't have their own active NFC device there is still no need to have it, because they can use merchant's or anyone's else or even public NFC devices (bitcoins ATMs) to manage their own NFC tags.




I thing this is the future...