The invention provides a biometric apparatus which is able to determine the orientation of a measured person irrespective of the orientation of the measured person on the biometric apparatus or irrespective of the orientation of arrangement of the biometric apparatus and hence flow an electric current constantly through the same route and measure the voltage generated in the route, thereby providing accurate and reliable biometric data. The invention provides a biometric apparatus includes a plurality of weight measuring units provided on a casing for allowing a measured person to get on the upper surface thereof a comparative determination unit for comparing measured values measured by the weight measuring units respectively and determining the orientation of the body of the measured person on the casing on the basis of the result of comparison and a biometric data acquiring unit for acquiring a biometric data of the measured person on the basis of the result of determination by the comparative determination unit.
