Epoxy coated keyfobs are a fun and convenient alternative to RFID fobs. Epoxy housings protect advanced integrated chips,such as LF(125KHz)TK4100,T5577,EM4100,EM4305,HF(13.56MHz) Fudan F08,MF classic 1k,4k,MF desfire,Ntag 213,215,216 etc.Customized shapes and attractive printing make them perfect for payment retail,transportation, education, and entertainment applications.