The biometrics

I know it when i was in work but i didn't know what is the purpose of it..

Biometrics idendication authenticates secure entry, data or access via human biological information such as Dna of fingerprints( investor words, 2017).

Biometrics is the measurement and analysis of unique physical or behavioral characteristics ( such as fingerprint or voice patterns) especially as a means of verifyibg personal identity ( business dictionary, 2018). In the study of lue yang (2014) biometrics refers to the techbologies used to detect and recognize human physical characteristics.

That what i know for it..