Thanks for your reply. This leeds to another question.[quote:3qpt478e]The rings are even more secure in that regard because they have to be less than 5mm from poorly matched reader units with large antennas.[/quote:3qpt478e]
Does this mean that I have to hold the ring near a very specific area on my phone? I guess this means that the ring has to be properly rotated. I like the black/black version of the rings, but will it be possible to see if the ring has the right orientation?

Hi,

the idea of unlocking your door or paying stuff with the ring sounds great. But since I'm unfamiliar with the NFC technique I was wondering if this is safe. My question is what exactly prevents somebody to copy (the content of) my ring and unlock my door with that copy?

Thanks in advance,
cheers,
bb