authenticate

Everyday

1. To prove that something is real or genuine, not fake. tree →
2. (computing) To check someone's identity, for example with a password or fingerprint, before letting them in. tree →

In the lessons

In computing and online safety: apps authenticate you with passwords, codes or fingerprints (two-factor authentication). In history and art, experts authenticate old paintings and coins. Phrases: «two-factor authentication».

Examples

• Experts authenticated the old painting. tree →
• Use your fingerprint to authenticate. tree →
• The website sent a code to authenticate me. tree →
• Never share the code you get to authenticate your account. tree →
• The museum authenticated the Roman coin. tree →
• The letter was authenticated by its signature. tree →

Note

Noun: authentication. Online safety: a real company never asks you to read out an authentication code.