# uFR Online OEM Library example ESP IDF source code and instructions for using our uFR API Libraries on uFR Online devices OEM Version. uFR Library is used as IDF Component. # uFR Library API reference document https://www.d-logic.net/code/nfc-rfid-reader-sdk/ufr-doc/blob/master/Using%20Android%20uFR%20Library.pdf