With the most advanced fingerprint arithmetic in the world, automatically analyze the tiny difference of the latest fingerprints vs. the previous fingerprints and update accordingly to ensure the high accuracy and the optimum speed of fingerprint recognition. High recognition ability for injured and peeled fingers, the identification time is less than 0.8 second. Built-in ID card sensor (optional for IC card), validate freely by Card, fingerprint and password combination. 2.8 inch TFT color screen Support U disk to download or upload attendance records and fingerprint data ect. User could enroll the fingerprint in one device, and share the enrollment information with other devices through the USB flash memory. TCP/IP communication, network connection is simple and convenient, support Push Technology, operate access control networking and data collection &sharingfreelySupports 11 &18digitsfor user ID registration, user also could enroll mobile number for ID numbers.