Ecash + NFC 👀
Discussion
EISERN UNION
😱
#FCU 
Makes me think about sci-fi cred sticks. Anyway to provw amount on an NFC card without burning the cash. NFC tap to confirm funds are there. One time use breaks the seal to spend?
I think of those all the time!
I don't think that works without a CPU or some chip on the card.
How do the javacards work?
With a CPU + memory on the chip
Opendime
offline tap to pay 🤯
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