NFC ACR122U RFID Smart Card Reader Writer Copier Duplicator Writable Clone Software USB S50 13.56mhz ISO/IEC18092+5pcs UID Cards+5pcs UID tag      Feactures      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, Mif, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags   Supports new Mif Ultralight C (via pseudo APDUs) and Mif 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      Applications      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      Tech Specs:      Dimensions    98 mm (L) x 65 mm (W) x 12.8 mm (H)    Weight    70 g    Interface    USB Full Speed    Operating Distance    <;= 50mm (depends on tag type)    Supply Voltage    Regulated 5V DC    Supply Current    200mA (operating); 50mA (standby); 100mA (normal)    Operating Temperature    0-50°C    Operating Frequency    13.56 MHz    Smart Card Interface Support    ISO14443 Type A &BMifFeliCa4types of NFC (ISO/IEC18092) tags   Compliance/Certifications    PC/SC, CCID, CE, FCC, VCCI, RoHS Compliant, USB Full Speed    Microsoft ® WHQL: 2000, Server 2003, XP, Vista, Server 2008, Server 2008 R2, 7   Operating System Support    Win 98, Win ME, Win 2000, Win XP, Win Vista, Win 7, Win Server 2003, Win Server 2008   Win XP x64, Win Vista x64, Win 7 x64, Win Server 2003 x64, Win Server 2008 x64, Win Server 2008 R2 x64   Windows CE 5.0   Linux   Mac