Printing PGP Businesscard

Avi at
Thu Dec 26 21:01:09 CET 2013

Would having the e-mail address and name in the QR code adversely affect
compatibility with monkeysign?
For example, see the attached code which is similar to what I was playing
with for key-signing purposes, although I was going to print them on
mailing labels.

[image: Inline image 2]



pub 3072D/F80E29F9 1/30/2009 Avi (Wikimedia-related key) < at
   Primary key fingerprint: 167C 063F 7981 A1F6 71EC ABAA 0D62 B019 F80E

On Thu, Dec 26, 2013 at 2:24 PM, Daniel Kahn Gillmor
<dkg at>wrote:

> On 12/24/2013 01:02 PM, Johan Wevers wrote:
> > You think someone will type it over? KeyID plus a URL would be more
> > usefull IMO (perhaps a QR code with the URL?)
> Please use a QR code that contains the full fingerprint (no spaces)
> prefixed with OPENPGP4FPR: -- this is the mechanism used by the
> monkeysign project and other mechanisms:
> Most humans don't really cope well with long strings of hexadecimal or
> any other high-entropy arbitrary data.
> Using machine-readable QR codes makes it easy for humans to feed the
> data directly into their trusted machines.
>         --dkg
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> Gnupg-users mailing list
> Gnupg-users at
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