Hmm, this is firmcoin thing looks like what I mean. They don't have a
solution yet, and prices they quote smartcards are unacceptable, but if
they will manage to get down in selfcost - that may work. Ok, I'll follow
them and see what it will come to.
Best regards,
Alex Kotenko
2014-05-19 13:55 GMT+01:00 Sergio Lerner <sergioler...@certimix.com>:
> Alex,
>
> I think that what you are talking about more or less something like
> the Firmcoin
>
> Check: http://firmcoin.com/?p=92
>
>
>
> On 18/05/2014 08:47 a.m., Alex Kotenko wrote:
>
>
>
> 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?
>
>
> The firmcoin has two capacitive buttons that you have to press in
> sequence to redeem to coins. No long range antenna can do that.
>
> Best regards,
> Sergio.
>
> PS: the device has patents pending
>
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