A command destined for a smart card is received. If the command is of a state-altering type that places the smart card in a known state, it is relayed to a smart card reader unless the smart card is currently in the known state. If the command is a POWER OFF command, it is relayed to the smart card reader unless (i) the smart card is currently in the known state and (ii) within a predetermined time from receiving the command, a subsequent command of the state-altering type that places the smart card in the known state is received. If the command is not a POWER OFF command and is not of the state-altering type that places the smart card in the known state, it is relayed to the smart card reader. The command is discarded if not relayed to the smart card reader.