GIGAZINE

The mechanism by which you enter an email address or phone number and a 6-digit code is sent to log in is the 'worst password system', so it is pointed out that it needs to be ...

When logging in to an app or service, you often have to authenticate by entering your email address or phone number and a one-time password sent via email or text message. Engineer Daniel Huang points ...
Digit

WhatsApp launching beta version for Android to increase security to 6-digit code

WhatsApp is rolling out a beta version for Android users which enables the new security feature of logging into the app from different devices with a 6-digit code. WhatsApp Beta for Android 2.23.1.11 ...
India.com

WhatsApp Working On Double Verification Code Feature To Secure Entire Login Process

https://www.india.com/technology/whatsapp-double-verification-code-feature-login-process-app-whatsapp-account-android-ios-wabetainfo-6-digit-code-verification-process ...
Macworld

Apple steps up security with native two-factor and 6-digit passcodes in iOS 9

Nestled in the middle of iOS 9 announcements were two security-related bumps: Apple now suggests you sete a six-digit passcode instead of a four-digit one; and two-factor authentication becomes a ...