What are the prerequisites for receiving IBKR Mobile notifications? In the second case, the user is invited to tap on the notification - this will automatically open the IBKR Mobile app, through which the authentication process needs to be completed. The IBKR Mobile application uses notifications: How does the IBK R Mobile app use notifications? Notifications can deliver information to users or advise them of a specific action they are invited or required to perform. Apps developers use those messages to quickly and effectively attract the users attention, even if currently not engaging with their application. In this article we explain what notifications are, how they are used within the IB Key authentication process and which troubleshooting actions you can perform in case you do not receive them on your smartphone.