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/

------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
_______________________________________________
Bitcoin-development mailing list
Bitcoin-development@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bitcoin-development