My ring (NTAG216) works perfectly with the Dorma Kaba evolo cylinder when using a Mifare master card. I assume it won't work when you use a Legic master card however I have not tested this.
I like Kwikset locks. Although one blogger writes that Schlage is good too.
P.S. I think you should read, Richard knows what he is writing about. Good luck (Richard`s blog)
@johnyma22 I will keep an eye out in future for the errors in regards to #5. As for door locks can you let the community know which door locks work with the payments ring and update this thread please ?
It is possible to read the ceramic rings with an iPhone 7 and up, with iOS11+ installed. But as Andreas said - Apple have still locked things down for the most part. You would have to write to the ring using a different device, generally speaking.