They are also used as a second means of authentication, very often if a person logs in from a new computer (see two-factor authentication). As soon as the one-time password (OTP) is entered ...

The WhatsApp message from their seemingly trusted contact asked the user to check their messages for an OTP or verification code that was sent to them by mistake, and then share the details over ...

The way you hold your phone, the pressure that you exert when you’re typing on the keyboard and other things — these are multiple hidden factors that will give you the same result as an OTP ...