I’d be willing to help. I’m very knowledgeable in antenna and PCB design. I highly doubt you’ll be able to get something working though. Android uses host card emulation to actively transmit card details, and everything is handled in the EMV backend using a system called tokenization. We have everything set up for the apex to be a passive tokenized payment device like the Apple watch, but Mastercard and Visa won’t allow it in an implant form factor. You’d have to lie and say your device was a payment accessory, but when they found out they would deactivate all the devices
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