It is actually quite bulky for a wlan capable linux computer, but the smaller ones like http://hackaday.com/2013/08/12/hacking-transcend-wifi-sd-cards/ http://h

It is actually quite bulky for a wlan capable linux computer, but the smaller ones like http://hackaday.com/2013/08/12/hacking-transcend-wifi-sd-cards/ http://hackaday.com/2013/08/12/hacking-transcend-wifi-sd-car... don't give you acces to any gpio pins.