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

Example sentences 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