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Well, with payment devices specifically for nano payments, you could

have a system where Internet connection is not required on your phone but in the Point of Sale device. So you can pay nano with a card or with your phone's NFC- you don't need internet, just your private key to sign the transaction. I think that's how Kappture and Appia work? So the device creates the transaction, you just use your phone or card to sign it :)

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that's cool! Thanks!

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