The idea behind this project is that if you have an RFID credit card, you can tell your bank that you need a replacement card, then once you have that second card, you can dissolve it in acetone, take out the RFID chip, solder a new antenna to it, glue that assembly to an inner frame, then put that assembly in a mold made from the full-size ring, pour resin around it, then have a ring that will let you pay at any establishment that accepts RFID credit cards (you’ll be able to use your ring at pretty much anywhere that accepts google/apple pay) without you needing to take out your wallet.
To find out if your card has RFID contactless payment options, look for this symbol on the front or back: https://imgur.com/rQDpAac
If it doesn’t, you can also call your bank and see if they have them available. My card did not have RFID but they were able to send me one that did when I called and asked.
I’d suggest reading through everything in this instructable before starting in on this.”

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