acr122u
The ACR122U is a PC-linked contactless smart card reader/writer used for accessing ISO 14443-4 Type A and Type B, MIFARE®, ISO/IEC 18092(standard for Near Field Communication – NFC) and FeliCa tags. It is compatible with existing PC/SC applications. The ACR122U serves as the intermediary device between the computer and the contactless tag via the USB interface.