Card sorting for Blind Users

Hi,
I've been lurking here quite a while. Does anyone have any tips on how to
run an effective card sort (or affinity diagramming) session with a blind
user in the group? I would like to include a few people in our next card
sort but am a bit pressed on resources for doing so. I'm a bit hung up on
the accessibility of my cards (which I could print in Braille too) but it is
the re-organizing of the cards that I'm concerned about.
Any tips would be greatly appreciated. 
 
MNR Steve