Provided is an individual identification device which uses high-frequency electrocardiograms and can improve identification accuracy of individuals. This individual identification device (1) is provided with: an electrocardiogram / high frequency electrocardiogram acquisition unit (10) which comprises a pair of electrocardiogram electrodes (11, 12) and which acquires an electrocardiogram and a high-frequency electrocardiogram, which is an electrocardiogram from which the low-frequency component has been removed a peak extraction unit (21) which differentiates the electrocardiogram and extracts zero cross points corresponding to R wave peaks an HFECG cutout unit (22) which, in a prescribed range that includes the extracted zero cross points, cuts out a high-frequency electrocardiogram an HFECG storage unit (25) which stores, as pre-registered high-frequency electrocardiograms, the cut-out high-frequency electrocardiograms of multiple registrants and an individual identification unit (26) which compares the cut-out high-frequency electrocardiogram of a person to be identified and a pre-stored registered high-frequency electrocardiogram and, on the basis of the similarity between the two, identifies the person to be identified.Linvention concerne un dispositif didentification individuelle qui utilise des électrocardiogrammes à haute fréquence et peut améliorer la précision didentification dindividus. Ce dispositif didentification individuelle (1) comprend : une unité dacquisition délectrocardiogramme/électrocardiogramme à haute fréquence (10) qui comprend une paire délectrodes délectrocardiogramme (11, 12) et qui acquiert un électrocardiogramme et un électrocardiogramme à haute fréquence, qui est un électrocardiogramme dans lequel la composante à basse fréquence a été retirée une unité dextraction de pic (21) qui différencie lélectrocardiogramme et extrait des points de passage par zéro correspondant à des pics dondes R une unité de découpe HFECG (22) qui, dans une pl
