I've made some improvements to my offline paper wallet printer.
Heres a new demo.
http://www.youtube.com/watch?v=noW77GqmNBQ&feature=youtu.beAnd a peek into the innards.
http://imgur.com/OeGyVCBI'm working toward creating a shippable product so I'd really appreciate any advice.
I'm currently using ~€45 worth of parts so a rough guess at a retail price would be €80-€90 depending on the manufacturing effort.
Speed is the major problem at the moment so I'm going to investigate different microcontrollers/processors.
Are there any other suggestions to make this a more compelling product?