I am  an engineer from embedded  world, which often  have to deal
with devices  with no internet  connectivity.  I am  thinking, it
would be great if bitcoind  software has a tty like interface for
transactions in  addition to socket connections.  Since  tty is a
very  versatile interface  in  the embedded  world  which can  be
accessed/emulated over rs232, usb, bluetooth etc.

Some usage comes to my mind:
1. a kind of usb-connected bitcoin-wallet/vault
Bring my vault to my  store, connect to computer, doing every day
transactions.  Save/transfer  all  of  the  BTC I  earned  to  my
personal vault and store in a safe place during night.

2. device-to-device transactions over bluetooth
Doing off-line  BC transaction over bluetooth  devices during the
day   and  sync  the   transactions  to   the  BC   network  with
internet-connected computer later.

What do you think folks?

--
eko