How does a RFID Card work? - Spy-Fy
![Mifare 13.56Mhz RC522 RFID Card Reader Module [MFRC-522] - US $1.25 : HAOYU Electronics : Make Engineers Job Easier](http://www.haoyuelectronics.com/Attachment/MFRC-522/RC522_1.jpg "Mifare 13.56Mhz RC522 RFID Card Reader Module [MFRC-522] - US $1.25 : HAOYU Electronics : Make Engineers Job Easier")
Mifare 13.56Mhz RC522 RFID Card Reader Module [MFRC-522] - US $1.25 : HAOYU Electronics : Make Engineers Job Easier
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RFID 125KHZ EM4100 USB Port NFC IC Smart Card Reader 13.56MHz MF/S50/S70 Free Drive Support for Window Linux Vista Android - AliExpress
External Secured RFID Card Reader 125kHz + 13.56MHz with NFC (USB) | Axis Communications
SR360 865Mhz~915Mhz Desktop UHF RFID Card Reader with Keyboard Emulation Output Access Control System POS Yanzeo
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