From: "Martin Sip" <m.sip@volny.cz>
To: "'Sergio Lerner'" <sergiolerner@certimix.com>,
"'Alex Kotenko'" <alexykot@gmail.com>,
"'bitcoin-development'"
<bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Paper Currency
Date: Mon, 19 May 2014 15:34:05 +0200 [thread overview]
Message-ID: <001601cf7367$01666ff0$04334fd0$@volny.cz> (raw)
In-Reply-To: <5379FF38.4050909@certimix.com>
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Alex,
I think the problem of making paper bitcoins is equivalent to the idea of
creating paper implementation of bitcoin sidechain. Hard one in my mind. If
we could resolve this one in secure and decentralized way it would be the
same breakthrough as bitcoin itself is.
Martin Sip
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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next prev parent reply other threads:[~2014-05-19 13:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-17 15:31 [Bitcoin-development] Paper Currency Jerry Felix
2014-05-17 15:45 ` Matt Whitlock
2014-05-17 16:07 ` Chris Pacia
2014-05-17 16:40 ` Gregory Maxwell
2014-05-18 11:47 ` Alex Kotenko
2014-05-18 12:14 ` Andreas Schildbach
2014-05-18 12:51 ` Alex Kotenko
2014-05-19 13:06 ` Brooks Boyd
2014-05-19 13:50 ` Alex Kotenko
2014-05-18 13:50 ` Natanael
2014-05-18 18:47 ` Alex Kotenko
2014-05-18 20:10 ` Natanael
2014-05-19 10:26 ` Alex Kotenko
2014-05-19 12:55 ` Sergio Lerner
2014-05-19 13:34 ` Martin Sip [this message]
2014-05-19 13:53 ` Alex Kotenko
2014-05-19 14:47 ` [Bitcoin-development] patents Adam Back
2014-05-19 15:09 ` Mike Hearn
2014-05-19 18:27 ` Peter Todd
2014-05-19 18:40 ` Mike Hearn
2014-05-19 18:43 ` Gregory Maxwell
2014-05-19 18:46 ` Peter Todd
2014-05-19 18:49 ` Mike Hearn
2014-05-19 22:15 ` Bernd Jendrissek
2014-05-20 10:30 ` Jeff Garzik
2014-05-18 13:50 ` [Bitcoin-development] Paper Currency Andreas Schildbach
2014-05-19 12:21 ` Mike Hearn
2014-05-19 18:20 ` Justus Ranvier
2014-05-19 18:39 ` Peter Todd
2014-05-18 19:54 Jerry Felix
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