key Fobs/Keychain Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) Material ... 3) Shape: keychain, fob, token, wris key Fobs/Keychain Smart Tag:4) Chip: TK4100, EM4100, T5557, Hitag2, Mifare S50 ... Card type: read only 2) Memory: 64 bit, 128 bit: Protocol ask, Manchester 3) Mode: EM4100, EM4102, TK4100 (much cheaper ... anti-counterfeiting, access control, industrialtransponder key Fobs/Keychain Smart Tag