| 摘要 |
<p>The invention concerns a smart card reader (20) comprising a housing for receiving the card, a microprocessor (30), means for connecting the microprocessor to the smart card inserted in the housing and a voltage source (21). The invention is characterised in that the microprocessor (30) is electrically powered by the voltage source (21) via a switch (24) which is normally open, and is arranged to be closed when the card is completely inserted in the housing. The invention is particularly applicable to viewer card readers powered by an electric battery.</p> |
