Multi-factor authentication - Wikipedia

Two-factor authentication for Apple ID - Apple Support

Two-factor authentication for Apple ID - Apple Support

https://support.apple.com/en-us/HT204915

Jun 21, 2017 - Two-factor authentication is an extra layer of security for your Apple ID ... When you want to sign in to a new device for the first time, you'll need to .... Apple Watch with watchOS

2-Step Login - Buffer

2-Step Login - Buffer

https://buffer.com/2step

2-Step Login, adds an extra layer of security for your Buffer account. Whenever you log in to your account, after entering your username and password, you will ...

What is Two Factor Authentication? | SecurEnvoy

What is Two Factor Authentication? | SecurEnvoy

https://www.securenvoy.com/two-factor-authentication/what-is-2fa.shtm

Two Factor Authentication, is an extra layer of security that requires not only a password and username but also something that the user has on them.

What is two-factor authentication (2FA)? - Definition from WhatIs.com

What is two-factor authentication (2FA)? - Definition from WhatIs.com

http://searchsecurity.techtarget.com/definition/two-factor-authentication

Dec 21, 2016 - Two-factor authentication (2FA) is a security process for user ... 2. Possession factors -- something the user has, such as an ID card, security token or a ... with login credentials, old

Two-factor authentication: What you need to know (FAQ) - CNET

Two-factor authentication: What you need to know (FAQ) - CNET

https://www.cnet.com/news/two-factor-authentication-what-you-need-to-know-faq/

Jun 15, 2015 - But why's two-factor authentication important, and will it keep you safe? ... as it's commonly abbreviated, adds an extra step to your basic log-in procedure. .... I've been

Virginia Tech | University 2-Factor Authentication

Virginia Tech | University 2-Factor Authentication

http://www.it.vt.edu/2factor/

Virginia Tech uses Duo Security to ask individuals for a secondary confirmation of their identity at log-in, using a physical device in their possession. The device ...

Two Factor Auth List

Two Factor Auth List

https://twofactorauth.org/

List of sites with Two Factor Auth support which includes SMS, email, phone calls, hardware, and software.

Introducing Login Approvals - Facebook

Introducing Login Approvals - Facebook

https://www.facebook.com/notes/facebook-engineering/introducing-login-approvals/10150172618258920/

Login approvals is a Two Factor Authentication system that requires you to enter a code we send to your mobile phone via text message whenever you log into ...