Disclosed is a technology for preventing a legitimate terminal’s user from being damaged due to the fraudulent usage of a cloned terminal. Also described are irreversible inhibitors of Btk. A simultaneous action of a main feedback system and a feedback system for the output current is eliminated, whereby an internal operating point can be prevented from fluctuating and therefore stability of the operation is improved. Each sensor detects the magnetic field generated by the magnetic field source and generates a magnetic field signal. The invention also provides procedures for administering the compositions to a patient who is afflicted with osteoarthritis. The system also allows an owner to license the pet with a participating municipality.