[Cryptech Tech] smart card interface for next hw rev

[Jakob Schlyter]

In Berlin, we've been talking about how to use smart cards for 
reading/writing m-of-n components independent of the management host. 
The rough consensus was that plain memory smart cards as data carriers 
would be easy to use and present a reasonable interface to the ARM. 
Alternatives would be USB or punch cards, but seems to either add more 
attack surface or require ancient hardware.

In order to be able to experiment more with this, we need two additional 
UARTs on the next hw rev board. One for connecting to a smart card 
reader (the rest of the required stuff is apparently already in the ARM) 
and one for a future LCD/keypad. As far as I understand, no other 
hardware (except for the actual reader/LCD/keypad) should be needed, and 
I hope Peter Stuge can confirm this.

	jakob