This new technology attaches a microphone-integrated earphone to the ear and collects the sound of the earphone echoed in the ear hole from the microphone, and instantly measures the acoustic characteristics determined by the shape of the ear peculiar to the individual in about 1 second. can.High-speed and highly accurate authentication with an authentication rate of 99% or more can be realized by the original technology that extracts the feature amount effective for individual identification from this acoustic characteristic.

　Compared to passwords and keys, conventional personal authentication technology that uses biometrics (biometric information) such as fingerprints and faces has the advantages of less risk of leakage or theft, and that it will not be forgotten or lost.In addition to its advantages, the technology developed this time does not require movements such as holding a part of the body over the authentication device when performing authentication, which puts a burden on users who wear earphones with integrated microphones and listen to sound. It is a new biometrics authentication technology that enables constant authentication with natural movements.Personal authentication is possible even while moving or working, and it has the potential to expand the range of utilization of biometrics authentication, such as protecting confidentiality.

　In the future, this new technology will be used for "prevention of spoofing" in operations related to safety and security such as maintenance and management of important infrastructure facilities, security, wireless communication, confidentiality of call contents, authentication during movement and work such as medical sites, and further. We aim to put it into practical use by the end of fiscal 2018 with a view to applying it to specific people and voice guidance services in specific situations.