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From: Paul Puey <paul@airbitz.co>
To: Eric Voskuil <eric@voskuil.org>
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Proposal for P2P Wireless (Bluetooth LE) transfer of Payment URI
Date: Thu, 5 Feb 2015 14:07:18 -0800	[thread overview]
Message-ID: <CABdy8DLRGyy5dvmVb_B3vao7Qwz-zdAC3-+2nJkg9rSsU6FLbw@mail.gmail.com> (raw)
In-Reply-To: <6AEDF3C4-DEE0-4E31-83D0-4FD92B125452@voskuil.org>

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So if you picked up the BLE broadcast request. All you know is that
*someone* within 100m is requesting bitcoin at a certain address. Not
necessarily who. The *name* is both optional, and possibly just a *handle*
of the user. If I'm sitting 5 ft away from someone at dinner and wanted to
pay them via BLE, I might see "Monkey Dude" on my list and simply ask him
"is that you?" If so, I send it. If there are two "Monkey Dude's" Then I
have to bother with the address prefix, but not otherwise.


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On Thu, Feb 5, 2015 at 1:46 PM, Eric Voskuil <eric@voskuil.org> wrote:

> BLE has an advertised range of over 100m.
>
> http://www.bluetooth.com/Pages/low-energy-tech-info.aspx
>
> In the case of mass surveillance that range could most likely be extended
> dramatically by the reviewer. I've seen  WiFi ranges of over a mile with a
> strong (not FCC approved) receiver.
>
> WiFi hotspots don't have strong identity or a guaranteed position, so they
> can't be trusted for location.
>
> e
>
> On Feb 5, 2015, at 1:36 PM, Mike Hearn <mike@plan99.net> wrote:
>
> This sounds horrible. You could basically monitor anyone with a wallet in
>> a highly populated area and track them super easily by doing facial
>> recognition.
>>
>
> We're talking about BLE, still? The radio tech that runs in the so called
> "junk bands" because propagation is so poor?
>
> My watch loses its connection to my phone if I just put it down and walk
> around my apartment. I'm all for reasonable paranoia, but Bluetooth isn't
> going to be enabling mass surveillance any time soon. It barely goes
> through air, let alone walls.
>
> Anyway, whatever. I'm just bouncing around ideas for faster user
> interfaces. You could always switch it off or set it to be triggered by the
> presence of particular wifi hotspots, if you don't mind an initial bit of
> setup.
>
> Back on topic - the debate is interesting, but I think to get this to the
> stage of being a BIP we'd need at least another wallet to implement it?
> Then I guess a BIP would be useful regardless of the design issues. The
> prefix matching still feels flaky to me but it's hard to know if you could
> really swipe payments out of the air in practice, without actually trying
> it.
>
>
>

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  reply	other threads:[~2015-02-05 22:07 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-05 20:06 [Bitcoin-development] Proposal for P2P Wireless (Bluetooth LE) transfer of Payment URI Paul Puey
2015-02-05 20:28 ` Mike Hearn
2015-02-05 20:37   ` Paul Puey
2015-02-05 20:43     ` Mike Hearn
2015-02-05 20:44   ` Eric Voskuil
2015-02-05 20:50     ` Mike Hearn
2015-02-05 20:59       ` Eric Voskuil
2015-02-05 21:19       ` Brian Hoffman
2015-02-05 21:23         ` Eric Voskuil
2015-02-05 21:36         ` Mike Hearn
2015-02-05 21:46           ` Eric Voskuil
2015-02-05 22:07             ` Paul Puey [this message]
2015-02-05 22:10               ` Eric Voskuil
2015-02-05 22:49                 ` Roy Badami
2015-02-05 23:22                   ` MⒶrtin HⒶboⓋštiak
2015-02-05 23:02                 ` William Swanson
2015-02-05 23:34                   ` Roy Badami
2015-02-05 23:59                     ` Eric Voskuil
2015-02-06  8:59                       ` Roy Badami
2015-02-06  9:13                         ` Eric Voskuil
2015-02-06  0:58                     ` Paul Puey
2015-02-05 23:22                 ` Eric Voskuil
2015-02-05 23:36                   ` MⒶrtin HⒶboⓋštiak
2015-02-05 23:46                     ` Eric Voskuil
2015-02-06  0:04                       ` MⒶrtin HⒶboⓋštiak
2015-02-06  0:22                         ` Eric Voskuil
2015-02-06  0:36                           ` Martin Habovštiak
2015-02-06  1:29                             ` Eric Voskuil
2015-02-06  9:07                               ` MⒶrtin HⒶboⓋštiak
2015-02-10 16:55                                 ` Eric Voskuil
2015-02-10 17:16                                   ` MⒶrtin HⒶboⓋštiak
2015-02-10 17:56                                     ` Eric Voskuil
2015-02-06  0:49                       ` Paul Puey
2015-02-06  0:50                         ` Martin Habovštiak
2015-02-06  1:05                         ` Eric Voskuil
2015-02-06  2:09                           ` Paul Puey
2015-02-05 22:02         ` Paul Puey
2015-02-05 22:01       ` Paul Puey
2015-02-05 22:05         ` Eric Voskuil
2015-02-05 22:08           ` Paul Puey
  -- strict thread matches above, loose matches on Subject: below --
2015-02-05  8:01 Paul Puey
2015-02-05 13:46 ` Andreas Schildbach
2015-02-05 13:57   ` Mike Hearn

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