... Reader 1.Contactless Card Reader 2.Secure Linux os 3.USB OTG, Built-in GSM,GPRS/CDMA Contactless Card Reader Supports 13 ... 14443A&B( EP900)1.Contactless Card Reader2.Secure Linux os3.USB OTG, Built-in GSM,GPRS/CDMA.WI-FI.Ethernet4. High-Speed ... Pad : Built-in PIN pad SAM 3 slots Standard communication USB OTG, Built-in GSM, GPRS/CDMA.WI-FI.Ethernet,Bluetooth2 RS232 ...