authenticator

[aw-then-ti-key-ter]

noun

1. a person or thing that authenticates.

2. Cryptography.,  a code used to authenticate a previously transmitted code.

Word History and Origins

Origin of authenticator¹

First recorded in 1860–65; authenticate + -or ²

Example Sentences

“They just frequently take on new forms, or target new platforms such as the authenticator app.”

From Los Angeles Times

He also recommended adding a PIN number to the sim card, which can be done in a phone's settings, and the use of authenticator apps to generate random codes, instead of ones sent by text.

From BBC

Once the hologram was affixed, the authenticator handed it back to Smith, who said, “I’m gonna give it to Walker.”

From Los Angeles Times

Microsoft has developed an authenticator tool that can analyze photos or videos to give a confidence score on whether it’s been manipulated.

From Seattle Times

The option lets you verify who you are, typically by text or an authenticator app.

From Los Angeles Times