UBW32 is an open source project that allows users to write and read 70+ IO pins through USB. TitanMKD added his blog site on the silkscreen and got 10 PCBs built by Seeed.
He is currently developing a project that uses the NFC shield to communicate with RF ID cards. So far he has been successful identifying the cards and reading all the sectors on them.
Via the forum.
78 pins! Now that’s what I call I/O