the.com/authentication
The bouncer who checks if you're really you before letting you past the velvet rope.
means The process of verifying that someone or something is genuinely what it claims to be, usually before granting access.
from From Greek authentikos, meaning original or genuine, rooted in authentes, one who acts on their own authority.
Three factorsSomething you know, have, or are.
Not authorizationProving who you are precedes what you may do.
Password originRoman sentries used watchwords to confirm allies.