The ACR122U NFC Reader is a PC-linked contactless smart card reader/ writer developed based on the 13.56 MHz Contactless ( RFID) Technology. Compliant with the ISO/ IEC18092 standard for Near Field Communication ( NFC) , it supports not only Mifare® and ISO 14443 A and B cards but also all four types of NFC tags.

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.