Yes, but it must not sacrifice usability. It's paper money, people are used
to it and they have rather high standard of expectations in this area. Any
usbility sacrifices in this area result into failure of the whole thing.
Best regards,
Alex Kotenko
2014-05-18 13:14 GMT+01:00 Andreas Schildbach <andr...@schildbach.de>:
> > One problem we couldn't figure out here though - how to protect the
> > notes from unauthorized redeem. Like if someone else tries to reach your
> > wallet with his own NFC - how can we distinguish between deliberate
> > redeem by owner and fraudulent redeem by anybody else with custom built
> > long range NFC antenna? Any ideas?
>
> I think you'd need multiple factors to protect against that attack. Like
> encrypting with a key that is printed on the note as an QR code.
>
>
>
>
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