Hmmm, another of those simple projects but noone was thinking about it. But it's a very interesting project. Imagien just paying anything with your hand. You can always wear this ring, it's small, looks cool and it will "save you time" so that's great. Also, you won't mind about living your wallet any more since you could always wear this ring. So, that's waht pockybum522
user made and posted on instructables. he made the 3D design of the ring and printed that using an SLA printer so it will have very good resolution. He removed the NFC chip form a credit card and planted that chip inside a transparent ring that looks cool.
So, let's see how he made it, how it works and see if you like the idea. It looks simple but making it also has some tricks.