dvdkhlng writes "Even though completely copyleft, the NanoNote hand-held platform failed to get the attention of many due to its low specs and the lack of wireless connectivity. The objective to keep things open had its price, and wireless technology is a mine-field of patents and NDAs. Now, a few gifted hackers designed an add-on card to bring wireless to the NanoNote. It's not what you would expect; WLAN compatibility was sacrificed, going for the less encumbered IPv6 over the 802.15.4 standard instead. The resulting dongles won't win a prize for the highest bandwidth, but excel at simplicity, energy efficiency and manufacturability. Want to see the ugly details? Designs, source code and production documentation are published under open source licenses."