I did; left in his hands. Thanks for reminding me about that. I would have started the replacement process all over again.

The office I work in has 10 wifi signals stronger than -80 dBm. That would be the worst my ring is exposed to. As for re-writes, I'm at two for one side, 5 for the other. The failure of both sides did not correspond with a re-write.

Aaaand there goes the other side of the ring. I'm really hoping my ring just happened to be part of a bad batch that slipped through QA. I've absolutely babied my ring since the first side failed, just to be certain I didn't lose the other chip. Time to go through the returns process!

You know, I hadn't really tested that. I'll let you know after I run it through some tests. I [i:12xo79s3]can [/i:12xo79s3]tell you that the sweet spot is right at the 'base' of the antenna i.e. the side of the loop closest to the IC.

I've used my ring successfully with Adafruit PN532 breakout board. They also have a PN532 arduino shield.

I've found rolling helps if I have my otterbox defender case on my phone. Without the case, my ring only needs to be close to the sweet spot.

I'm actually not a huge fan of shiny rings, so I find the slowly developing burnished look of my titanium ring quite nice. I do nothing to protect it, and wear it on the index finger of my dominant hand. It has so far survived steel wool (washing dishes), bitter cold (left it in the car overnight), an impact with brick, and one curious parrot who is known for making wood chips out of 2x4s.

I received my ring a few days ago, and love being able to unlock my door and phone with my hand; very convenient. Half the fun died when one side of my ring stopped working yesterday. At first it would only work about half the time, then it stopped working completely. My phone, a Galaxy Note 2, can no longer read that one side, nor can the Adafruit PN532 breakout board. The other side of the ring still works flawlessly across devices.

Has anyone else experienced this problem?