... Modem, GPRS or CDMA ,LAN Support optional components, such as barcode scanner, fingerprint reader, pin pad, contactless card etc. More security ... appliances: tamper resistant, tamper responsive, tamper evident, all compliant with RSA, DES, 3DES, MAC X9.9, and DUKPT encryption ... ASCII character and GB2312 standard font libKey pad23 Keys with waterproof and dustproof,10 alphanumeric keys,13 function keys, ...