From: Alex Kotenko <alexykot@gmail•com>
To: Jeff Garzik <jgarzik@bitpay•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>,
Andreas Schildbach <andreas@schildbach•de>
Subject: Re: [Bitcoin-development] Payment Protocol for Face-to-face Payments
Date: Thu, 20 Mar 2014 17:42:26 +0000 [thread overview]
Message-ID: <CALDj+BbF5=L88n6VvDt=ctnr+_1730L3RN+3nb2N3AW3RLESRg@mail.gmail.com> (raw)
In-Reply-To: <CAJHLa0NeFdXzioQrmK6iKzr85pL3vvTAQH2_vKM3M+T+ZWYjgQ@mail.gmail.com>
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2014-03-20 17:31 GMT+00:00 Jeff Garzik <jgarzik@bitpay•com>:
> On Thu, Mar 20, 2014 at 8:12 AM, Adam Back <adam@cypherspace•org> wrote:
> > Whats a sensible limit on practical/convenient QR code size?
>
> Extremely limited. Preferably under 100 bytes. You will see
> increasingly poor operating in varying light conditions, such as
> paying via QR code on a printed receipt in a pub at night. That was
> one of the motivations for BIP 73.
>
Hmm, in this case I think base43 discussion is irrelevant. Even with best
space utilization we can get we will not be able to fit in anything bigger
than a smallest unsigned payment certificate. And that is not so useful. So
probably we should stick with BIP73 approach and bluetooth URI scheme we're
inventing.
>
>
> On Thu, Mar 20, 2014 at 4:09 AM, Andreas Schildbach
> <andreas@schildbach•de> wrote:
> > Afaik, BIP73 needs an external server (the web server).
>
> Yes. Internet connectivity is not a rarity these days. Near-field
> web servers also work fine.
>
> --
> Jeff Garzik
> Bitcoin core developer and open source evangelist
> BitPay, Inc. https://bitpay.com/
>
>
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next prev parent reply other threads:[~2014-03-20 17:43 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-27 11:59 Andreas Schildbach
2014-01-27 13:11 ` Mike Hearn
2014-01-27 18:18 ` Andreas Schildbach
2014-01-27 18:34 ` Mike Hearn
2014-01-27 20:53 ` [Bitcoin-development] Experiment with linking payment requests via href Andreas Schildbach
2014-01-27 21:47 ` Mike Hearn
2014-01-27 17:11 ` [Bitcoin-development] Payment Protocol for Face-to-face Payments Jeremy Spilman
2014-01-27 17:39 ` Andreas Schildbach
2014-01-27 18:18 ` Jeremy Spilman
2014-01-27 20:34 ` Roy Badami
2014-01-29 14:57 ` Christophe Biocca
2014-01-30 10:46 ` Andreas Schildbach
2014-01-30 10:50 ` Mike Hearn
2014-02-07 23:15 ` Andreas Schildbach
2014-03-02 9:47 ` Andreas Schildbach
2014-03-02 11:50 ` Mike Hearn
2014-03-20 2:22 ` Alex Kotenko
2014-03-20 3:31 ` Jeff Garzik
2014-03-20 8:09 ` Andreas Schildbach
2014-03-20 10:36 ` Mike Hearn
2014-03-20 12:12 ` Adam Back
2014-03-20 12:20 ` Mike Hearn
2014-03-20 17:31 ` Jeff Garzik
2014-03-20 17:42 ` Alex Kotenko [this message]
2014-03-20 18:01 ` Jeff Garzik
2014-03-21 10:28 ` Andreas Schildbach
2014-03-21 13:59 ` Alex Kotenko
2014-03-22 16:35 ` Jeff Garzik
2014-03-22 16:45 ` Mike Hearn
2014-03-22 16:55 ` Mark Friedenbach
2014-03-22 17:24 ` Jeff Garzik
2014-03-22 17:30 ` Mike Hearn
2014-03-23 3:47 ` Alex Kotenko
2014-03-21 10:25 ` Andreas Schildbach
2014-03-21 10:59 ` Adam Back
2014-03-21 11:08 ` Mike Hearn
2014-03-21 11:33 ` Mike Hearn
2014-03-21 12:25 ` Adam Back
2014-03-21 13:07 ` Mike Hearn
2014-03-20 18:20 ` Alex Kotenko
2014-03-20 18:31 ` Mike Hearn
2014-03-20 18:50 ` Alex Kotenko
2014-03-20 21:52 ` Roy Badami
2014-03-20 23:02 ` Mike Hearn
2014-03-26 22:48 ` Roy Badami
2014-03-26 22:56 ` Mike Hearn
2014-03-26 23:20 ` Andreas Schildbach
2014-03-27 10:08 ` Mike Hearn
2014-03-27 13:31 ` vv01f
2014-06-30 19:26 ` Alex Kotenko
2014-07-01 8:18 ` Mike Hearn
2014-07-01 9:48 ` Andreas Schildbach
2014-07-01 10:42 ` Michael Wozniak
2014-07-01 13:03 ` Alex Kotenko
2014-07-01 14:59 ` Andreas Schildbach
2014-07-01 15:07 ` Michael Wozniak
2014-07-01 15:39 ` Andreas Schildbach
2014-07-01 17:18 ` Alex Kotenko
2014-07-01 17:59 ` Mike Hearn
2014-07-02 8:49 ` Alex Kotenko
2014-03-21 10:43 ` Andreas Schildbach
2014-03-20 8:08 ` Andreas Schildbach
2014-03-20 16:14 ` Alex Kotenko
2014-03-21 9:47 ` Andreas Schildbach
2014-03-21 13:54 ` Alex Kotenko
2014-03-21 14:51 ` Andreas Schildbach
2014-03-21 15:38 ` Alex Kotenko
2014-03-21 15:20 ` Andreas Schildbach
2014-03-21 15:24 ` Mike Hearn
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