KeyCArd : 第一個用在汽車音響的用戶識別卡

Blaupunkt's smartcard car stereo system, called KeyCard? is used to deter radio theft and to also

store each cardholder's favorite radio stations, tone control settings, and other features. Now, two

drivers can each set up the same radio to suit their different tastes in music and sound. These settings

are stored in their personal KeyCards not in the radio.

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