The present invention is an input/output integration module for simultaneously linking fingerprint and finger veins algorithms, in which an integration module (U1) for simultaneously authenticating a fingerprint and finger veins is characterized by having a configuration composed of a fingerprint module (U2), a finger vein module (U3), and a conversion module (U4). The fingerprint module (U2) scans a fingerprint with an image sensor, compares the scanned image with a pre-stored image, and when there is a person having the same fingerprint image, outputs a registered authentication code of the corresponding person through specific serial communication. The finger vein module (U3) scans the veins with the camera image sensor after infrared LED radiation is transmitted through a finger, compares the scanned image with a pre-stored vein image, and when there is a person having the same image, outputs a registered authentication code of the corresponding person through specific serial communication. The conversion module (U4) receives input of the specific serial communication signal output from the finger vein module, converts the received signal to a signal of the same specific serial communication as that of the fingerprint module (U2), and outputs the converted signal. The integration module (U1) receives transmission of a fingerprint authentication code output from the fingerprint module (U2) and a finger vein authentication code output from the finger vein module (U3), and when the fingerprint authentication code matches up with the finger vein authentication code, outputs the corresponding authentication code to a USB.L'invention concerne un module d'intégration d'entrée/sortie pour la liaison simultanée d'algorithmes d'empreinte digitale et de veines de doigt, et, dans ce module, un module d'intégration (U1) servant à authentifier simultanément une empreinte digitale et des veines de doigt est caractérisé en ce qu'il présente une configuration composée d'un modul
