3.5" TFT screen with Linux System ID Card Function TCP/IP + U ... Attendance SYSTEM Time Recorder, Time Clock, ID CARD, LINUX OS, TFT COLOR SCREEN, TCP IP Fingerprint Time Attendance ( Time Recorder ): Advantages ... :1534 FINGERPRINT TIME ATTENDANCE ( TIME RECORDER ) provide 3.5 inch TFT screen and with Linux Operating System. 1534 FINGERPRINT TIME ATTENDANCE ...