Apparatus for protecting a RFID password and method therefor, and RFID tag accessing method

A device and a method for protecting an RFID(Radio Frequency IDentification) password, and an RFID tag accessing method are provided to safely transfer a password for an RFID tag to a user without exposing the password to other users, easily check exposure of the RFID password, and access the RFID tag attached to an article through the RFID password not exposed to other users. The password for the RFID tag is printed to a recording medium(120). A one-time covering material(130) visually isolates the password by being placed to surface of the recording medium, and is removed by physical or chemical ways. The recording medium is paper or plastic, and the one-time covering material is a painting film formed on the surface of the recording medium and removed through friction. The recording medium is attached to the article(100) to which the RFID tag(110) is attached.