A new-style fingerprint recognition system which is based on DSP and RF-card is proposed in this paper. The new system adopts the way of comparing the new captured fingerprint image to the fingerprint characteristics which can be read from the RF-card. The matching time is much shorter than former embedded system which used to compare the captured fingerprint image to each fingerprint’s characteristics which are stored in flash memory or other memory. In addition, a Power Switch Module, which can automatic switch the ways of power supply between wall adapter and batteries, is proposed in this paper. The new fingerprint recognition system has the characteristics of low power, low cost and high performance.
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