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  • RFID NFC Tap and Go Ring for Credit Card Payment

    Thank you!

    Good to know!

    Thank you! I hope this is helpful in doing so, let me know where you get with it!

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    • RFID NFC Tap and Go Ring for Credit Card Payment
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  • RFID NFC Tap and Go Ring for Credit Card Payment

    Let me know how you get on and if there's anything I can streamline in the instructions!

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  • RFID NFC Tap and Go Ring for Credit Card Payment

    Oh no! Yeah that's not helpful. In the US I think there's a limit of a few hundred with most banks. I have not found it yet.

    So I should be aiming for 13.62" for winding the ring. I measured the original antenna very carefully the first time. I wonder why they made it 30" instead of 27.25"Curious.

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  • RFID NFC Tap and Go Ring for Credit Card Payment

    Let me know how watch band goes, it should work just fine. Run the antenna as far out in the band as you can get it without compromising structure, if you're going to do it internally. You might also get good results running it around behind the watchband and then "laminating" it with something so it's not rubbing on your skin.

    That's good to know! I asked my bank about those as I remembered them from the first generation of RFID credit cards 5 or 6 years ago, but they didn't issue them. Good to know that some have them available, they would definitely work well for this. The chip's board might even be smaller since it's intended to go in a smaller form factor. Thanks for the tip!

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  • RFID NFC Tap and Go Ring for Credit Card Payment

    That's fantastic! I wish I loved in a city with public transit. I'd make another ring :)I actually used this to purchase transit directly in chicago, since they allow CC taps to pay for a ride without needing a ticket. And yeah, if you tell them the stripe/chip is just worn/wearing out they won't, since you probably have it set up for 30 different things for autopay. Or at least that's what you can tell them ;)

    Thanks! And yeah, I can't wait for everything to be NFC on a phone or even a QR code for transit/payment/etc.

    Strange. I just say mine's worn and I get another with the same number. I'm with a major bank in America. Been doing it for years.

    Thank you! And definitely. What I found is that since the antenna is acting as both an inductor and an antenna, you want the fewest loops, but also want to keep the length multiples of the original length.For other RFID chips I would say measure the overall antenna length, then wind one made of magnet wire that's double that length, one that's the same length, and one that's half that length. Since most of us don't own antenna analyzers (Or am I the only one that's not a cool kid?) you can just test real-world range on a reader with those three and you'll very quickly find out what works. I tried the original antenna size wound around the ring and found it worked, but you had to press the ring right up against the reader. I also tried 1/4 size and same thing. Half of the original 30 inc...

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    Thank you! And definitely. What I found is that since the antenna is acting as both an inductor and an antenna, you want the fewest loops, but also want to keep the length multiples of the original length.For other RFID chips I would say measure the overall antenna length, then wind one made of magnet wire that's double that length, one that's the same length, and one that's half that length. Since most of us don't own antenna analyzers (Or am I the only one that's not a cool kid?) you can just test real-world range on a reader with those three and you'll very quickly find out what works. I tried the original antenna size wound around the ring and found it worked, but you had to press the ring right up against the reader. I also tried 1/4 size and same thing. Half of the original 30 inches and you don't have to talk the ring off your finger to use it. It's a balancing act between picking up power and relaying back the data RF packets.

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  • RFID NFC Tap and Go Ring for Credit Card Payment

    Thank you! I'd seen similar ideas with NFC tags and such, but none made out of the RFID chip in a CC. Figured I'd share my experiences and hopefully save others some time.

    Thank you! Entered.

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