AuthN 

Computer term abbreviation for Authentication. See also AuthZ.

The mod_auth project provides authn and authz modules for the apache httpd.

AuthN by sublimal June 4, 2004

tooth actor authentication 

When your credentials are authenticated by a tooth actor.

"Hi my name is Jennifer Hawkins and I certify these credentials as authentic."

"I wanted to make sure I was secure so I used tooth actor authentication.

tooth actor authentication by The_ALCH April 28, 2021

Author 

A person who writes books, articles, documents etc.

Bedanta Chakrabarty is my favorite YA author.

Author by humblebrendon November 20, 2019

auth.gg 

A software built atop stolen code by a developer who doesn't know anything.

auth.gg users can experience downtime, seldom updates, and frequent software circumvention.

owner is well known for doxing and scamming people, for proof visit outbuilt.ooo

Skid: "hey I just found a leaked source code online, how should I sell it?"

Skid's friend: "just use auth.gg, people like you make up 75% of their users!"

auth.gg by mak0001 September 2, 2021

author is open to hearing about dead batteries 

an AO3 tag for smut fanfiction meaning the author of said fic is open to hearing about readers masturbating to the fic.

"its fine to tell me that you jerked off to my fics as long as the fic has the author is open to hearing about dead batteries tag."

author is open to hearing about dead batteries by sharksrcool January 8, 2023

authenticity 

Being who you are, listening to yourself and making your own decisions, rather than buying all the crap society foists on you. Keep it real. (authentic)

Authenticity became his primary value. My dog lives for authenticy.

authenticity by DJrumination December 13, 2008

Real Author 

A "Real Author" is someone who has at least 500 people show up for book signings. It has nothing to do with being an international best seller or owning your own mountain purchased through your book sales. It only has to do with how many people show up to get you to sign their books.

"So, how many people are out there?"
"There's about 200 in line!"
<sigh>"Still not a Real Author"

Real Author by Skua September June 18, 2018