There is already plastic sleeves [1] with the same effect. The primary goal is to prevent interferences between all the NFC cards you'll have in your wallet (Ye

There is already plastic sleeves [1] with the same effect. The primary goal is to prevent interferences between all the NFC cards you'll have in your wallet (Yes, that's not a problem to have in the US for a few more years) [1]http://flux.bz/whatis.html http://flux.bz/whatis.html