... barcode scanner, fingerprint reader, pin pad, contactless card etc. More security design technology appliances: tamper resistant, tamper responsive, tamper evident, all ... ),asynchronous ( 33.6Kbps) (55.6Kbps optional)CommunicationmodeModem, , Ethernet TCP/IP(optional), WiFi (optional)GPRS or CDMA (optional, one of them)Program LanguageStandard ...