A nondestructive testing apparatus includes a storage section which stores a plurality of predetermined functions which are executable by the nondestructive testing apparatus, each of the predetermined functions being initially set to one of a permitted state and a disabled state; an input section which includes a plurality of input portions respectively corresponding to the predetermined functions; and a control section which is adapted to receive permission information including information which unlocks at least one of the predetermined functions initially set in the disabled state so as to be set to the permitted state. The control section automatically assigns the at least one predetermined function which has been unlocked to the corresponding input portion of the input section.