Two-step verification is a security layer in addition to your username and password. Many sites and services online have this, and it usually comes in the form of a code sent in a text message to your mobile/cell phone. This is how it will work when you register two-step verification on your Spinnup account.
Once two-step verification is setup, each time you login you will be sent a text message to your registered phone number with a 6-digit code that you must enter before you can get into your account.
For more information on getting started, read our article on how to setup two-step verification.