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

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

Make sure to add multifactor authentication, which adds a second layer of verification by requiring a code sent by text message or email, or inserting a USB authenticator key into your device.

From Seattle Times

The technology used by MLB authenticators — most of whom are current or former law enforcement officers with chain-of-custody training — has evolved.

From Los Angeles Times