Push Authentication, aka. Out Of Band Authentication (OOBA), is one of the most secure forms of two-factor authentication. In an OOBA system, the network or channel used for user authentication is out of band - it is completely separated from the network or channel used for user login. Therefore, the possibility that both networks or channels are compromised by an intruder at the same time in a short period of time while a user is attempting to login is far less than that in a single band system.

DualShield supports 3 channels of Out-of-Band authentication, mobile data network, SMS message and voice over telephone.


Mobile PushSMS PushVoice Push

OOBA (Out of Band Authentication) Request on iPhone

SMS Push Notification for Out of Band Authentication (OOBA)

Voice Push for Out of Band Authentication (OOBA)



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