authenticator

[ aw-then-ti-key-ter ]
/ ɔˈθɛn tɪˌkeɪ tər /
|

noun

a person or thing that authenticates.
Cryptography. a code used to authenticate a previously transmitted code.

Origin of authenticator

First recorded in 1860–65; authenticate + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for authenticator

  • According to one authenticator of sports memorabilia, his clients are not optimistic.

    Tiger on Sale|Duff McDonald|December 8, 2009|DAILY BEAST