ACR122U NFC reader is a connected non-contact smart card reader based on 13.56 MHz non-contact (RFID) technology. It complies with the ISO/IEC18092 Near Field Communication (NFC) standard, supports IC cards, 14443 Type A and Type B cards, and all four NFC tags. Due to compliance with PC/SC standards, ACR122U is a plug-and-play USB device that can interoperate with multiple devices and applications. It uses a USB full-speed interface (12 Mbps) with an access speed of up to 424 kbps, allowing faster and more efficient read and write operations. The operating distance of ACR122U can reach up to 5 cm, depending on the type of non-contact tag. To improve security, ACR122U can be integrated with a 7816-3 card slot. The ACR122U NFC reader is also available in module form, making it easy to integrate into larger devices such as POS terminals, access control systems, and vending machines. ACR122U NFC reader is suitable for personal identity security authentication and online micropayment transactions. It can be widely used in applications such as access control, electronic payment, electronic ticketing (large events and public transportation), highway toll collection, and network verification. ACR122U can be equipped with an optional base. By placing the reader at the best angle, users can easily swipe contactless cards or NFC devices on the ACR122U. Application scope: online banking and online shopping, e-commerce, e-wallet balance inquiry, network access, customer points discount, identity verification, ticketing, parking lot charging system, automated toll collection system, public transportation, access control system, attendance, vending machines, contactless public telephones, logistics and supply chain management. Color: white Material: plastic Package Contents: 1 x NFC card reader Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.