Okay, i now managed to register the ring and to setup the unlock app. Still, having to usw the ring in addition to any other unlock option dorsn't make sense to me. Having it instead oft any other option neither as I might need to unlock without the ring as well.
That means I hav tobgo for the stock Android option. That doesn't work yet no matter how long I press the ring in the sweet spot before, during vor after pressing the Power button.

Thanks for the reply. I try the Android stock one, but without any success with the ring (Bluetooth devices work).
Therefore I wanted to try the app but not even registering works (just leads to the linkes Website)
Does Stock Android unlock work for anybody here on a Nexus 4? Can you successfully register on a Nexus 4? In case of any "yes", what Rom do you use?
Thanks for any ideas
Wolfgang

Dear all,
i received my ring, and it looks good. Still, it doesn't yet work as I expected. Every 20th time I try my Nexus 4 recognizes the ring and opens the link. I downloaded the 2 apps, but also in the registering process with the heatmap-like picture the only thing happening is opening the link (sometimes). What can I do to successfully register the ring in the app?
I also added the ring as trusted NFC device for unlocking (Android Smartlock, and it recognized the ring in that process) but the device does not at all react to the ring when I try to unlock. I know the sweetspot of the Nexus 4 and I tried as described but no success. Any ideas?

Best regards,
Wolfgang