authentication
aw-then-tih-KAY-shun
/ɔːˌθɛntɪˈkeɪʃən/
The process or action of proving or showing something to be true, genuine, or valid; in computing, verifying the identity of a user or process.
Specifically about verifying identity (Who are you?), distinct from authorization (What are you allowed to do?).
The story behind the word. From the Greek 'authentikos,' meaning 'original' or 'genuine.' It originally referred to a person who did something with their own hand. In modern tech, it's the digital 'handshake' that proves you are the real owner of an account.
Word relationships
- verification: Verification is checking if something is correct; authentication is checking if someone is who they claim to be.
Commonly confused with
- authorization: Authentication is 'Who are you?'; Authorization is 'What can you do?'
Word family
- authenticate (verb): To prove that something is genuine.
- authentic (adjective): Genuine; not a copy.
Collocations
- two-factor authentication
- biometric authentication
- user authentication
Example sentences
- "Enabling two-factor authentication adds an extra layer of security by requiring a code from your phone." A security recommendation for online accounts.
- "The system requires biometric authentication, such as a fingerprint or facial scan, for access to the vault." A technical specification.
Memory hook
Is it 'authentic'? Use 'authentication' to find out. Proving you are you.
When not to use
Don't use it for 'approval'; use it for 'verification'.
Fun facts
- The first computer password was created at MIT in 1961 to limit the time students could spend on a shared mainframe.
Related words
Explore more words
Take your vocabulary further with LangBlitz
Our English vocabulary app: FSRS spaced repetition, 5,000+ curated words across 119 topic groups, CEFR A1 to C2. Explore your mastery with the beautiful Vocabulary World feature.