Strike the digit keyboard for you when it sniffing the tag! Read UID No Programming Required No Software Required Just Plug and Play The YHY202D is a RFID reader which can read Mifare one s20, s50 and s70 RFID tags. This reader acts as a USB HID keyboard device. When YHY202D is deployed, no software is needed. It uses standard USB drivers supplied by the operating system such as Windows, Macintosh and Linux. The YHY202D reader can read the supported cards and print the card's serial number as 10 digits(Decimal format) and then end with " Enter " Key