No surprise it doesn't work with Apple. They would want to sell you an iRing at three times the price, then claim that it's new groundbreaking technology invented by them, like, err, contactless charging...
That was it! The culprit seemed to be a rather poorly written app from our city's public transit company, that is supposed to use NFC to read transit card info, but actually never works. The keyboard issue appears to be gone with this app removed.
Thanks for the tip! I'd never have guessed it, the app wasn't active or even open as a background process.
Xperia series from my perspective. I've tried a lot of phones, but the Xperia series seems to have the best most consistent read at the moment. (They all use the same little square antenna, it's a good match.)
I've possibly got it a little easier than most, my weapon of choice is the Australian version of a 68 Dodge Dart which doesn't have a steering column lock. I'll be deleting the ignition barrel from the dash board and the door locks from the doors.
The challenge will be to integrate a reader in each door, hopefully in the old lock barrel position underneath the painted surface of the car to function as a dual unlock/open point using electric latches and pop-springs. This coupled with shaving off the door handles should make for a bit of a wow factor, I'm imaging reaching out to the door and basically having it pop open towards me.
Something similar for the boot lid would be cool too.
The real trick will be embedding the sensor underneath the paint and still leaving it usable, should be interesting!
Sorry this took so long, the sweetspot on my Note4 is right around here shown in the image below.
I've been blown away by how good the antenna matching is with this device actually. It picks up the rings from nearly a centimetre away without a case on and works flawlessy with a thin case on - one of those silicon/plastic wraps that have a type of covered card on, that folds over the phone. Constantly amazed by how good it is!