two-step authentication
nounUK /ˌtuː ˈstɛp ɔːˌθɛntɪˈkeɪʃən/
US /ˌtu ˈstɛp ɔˌθɛntɪˈkeɪʃən/
A way to keep your account safe by using two things to prove it is really you.
The app asked for two-step authentication, so I entered my password and then a code from my phone.
SYNONYMS
OTHER MEANINGS
2. A security process where a user provides two different pieces of evidence before being allowed access.
Banks often require two-step authentication before you can check your balance online.
3. An extra check, such as a text message code, added after a password to confirm identity.
After typing my password, the two-step authentication sent a six-digit code to my phone.
4. A login method that combines something you know with something you have.
Two-step authentication combines your password with a one-time code from your device.