The response received through echo is then converted into digital sound.
The researchers state that this digital echo becomes like a unique ID for each person.
NECsaysthat it has tested the new login system and found it to have a accuracy of 99%.
It can also be used to answer a call on a locked smartphone which a unknown person cant.
NEC will commercialise the technique and hopes that it will be used widely by 2018.
source: www.techworm.net