What is dead can never die.
SMARTY_INTRODUCING_SMARTCOIN_SMARTCARDS
a smart card with a TPM or similar that holds all the private keys to the bitcoins, when a customer wants to conduct a transaction they place the card into the EFTPOS machine, enter the pin code (that is sent to the TPM), the chip signs the correct amount of coins over, then sends the result back to the EFTPOS machine.
attack vector is only a mal EFTPOS terminal and issues would be caught by checking the chain