key Fobs/Keychain Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) Material: ABS, PVC 3) Shape: keychain, fob, token, wris key Fobs/Keychain ... Smart Tag:4) Chip: TK4100, EM4100, T5557, Hitag2, Mifare S50 5 ... (T) 8) Applications: logistics automation, anti-counterfeiting, access control, industrialtransponder key Fobs/Keychain Smart Tag