2-Step verification
2-Step Verification or Out-of-Band This process is completed by generating a software token on a server and sending it to a user. The token can be sent via: SMS (Short Message Service): The code is sent to a registered phone number Email: The code is emailed to a registered email account Push Notification: The code is sent to an authenticator app on a smartphone or PC. This is seamless. The user does not have to enter the code; just tap the notification. Phone call: The code is sent as an automated phone call (voice) to a registered phone number