NFC ACR122U RFID Contactless Smart Reader & Writer + 5xMifare IC Card CCID-compliant PC/SC-compliant Read/write speed up to 424 kbps Built-in antenna for contactless tag access, with card reading distance of up to 50 mm (depending on tag type) Supports ISO 14443 Type A and B, Mifare, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags Supports new Mifare Ultralight C (via pseudo APDUs) and Mifare Plus SL1 (4 Byte UID, via pseudo APDUS) and SL3 Supports all 3 modes of NFC: reader, card emulation and peer-to-peer modes Built-in anti-collision feature (at least 1 card is detected when multiple cards are presented) USB PnP User-controllable bi-color LED Application****Network access control Micro-payment NFC mobile tag Public transportation terminals Automatic fare collection Physical access control Customer loyalty Time and attendance Contactless public phones Vending machines - ACR122U is compliant with both CCID and PC/SC. Thus, it is a plug-and-play USB device allowing interoperability with different devices and applications. With an access speed of up to 424 kbps and a full USB speed of up to 12 Mbps, ACR122U can also read and write more quickly and efficiently. The proximity operating distance of ACR122U is up to 5 cm, depending on the type of contactless tag in use. - In order to increase the security level, ACR122U can be integrated with an ISO 7816-3 SAM slot. Furthermore, the ACR122U NFC Reader is available in module form, permitting easy integration into bigger machines, such as POS terminals, physical access systems and vending machines. - The ACR122U NFC Reader is ideal for both secure personal identity verification and online micro-payment transactions. Other applications of the ACR122U include access control, e-payment, e-ticketing for events and mass transit, toll road fare collection and network authentication.