A flame atomization device, especially for an atom absorption spectrometer, is disclosed. By submucosal administration in the upper airway, it is possible to stimulate NKT cells and stimulate immune reactions extremely efficiently with a small number of NKT cell ligand-pulsed antigen-presenting cells. By way of example, the inertial body may take the form of an inertial sensor assembly. Autographs of famous persons can be authenticated this way. A threshold is applied to the recognition scores to identify those utterances with recognition scores below the threshold as questionable utterances.