IBKR Mobile Setup
IBKR Mobile provides you with the tools needed to manage and trade your account from anywhere. In addition, it is the tool used by most clients for two-factor security.
To get started, use your device to download the app.

The security of your assets and personal information is of utmost concern to IBKR and we are committed to taking the steps necessary to make certain that you are protected from the moment you open your account. A key component of protection is the Secure Login System (SLS), a login process which relies upon Two-Factor Authentication to prevent anyone from accessing or using your account, even if they know your User Name and password. Once SLS enrolled, your account can only be accessed through use of 2 security factors: 1) something you know (entry of your User Name and password combination); and 2) something you have (entry of a random code generated from a physical security device or Smartphone application).
IBKR offers a variety of SLS devices, with the technical design of each corresponding to the level of assets maintained (click here). The following article provides an overview of the IBKR Mobile Authentication (IB Key), a Two-Factor security solution which can be enabled directly onto your Smartphone.

IBKR Mobile Authentication (IB Key) is available on your Smartphone via our IBKR Mobile app and can function as a security device, thereby eliminating the need to carry a separate physical device when logging into your IBKR account. In addition to the convenience of using a device which is trusted and routinely accessible, this app can be downloaded and activated in minutes, thereby eliminating the delays associated with the mailing of physical devices. Moreover, unlike in the case of physical devices, clients maintaining multiple accounts with distinct User Names may access IBKR Mobile Authentication (IB Key) all from the same IBKR Mobile app. Please refer to here for more details.

Users of Apple devices need to be on iOS version 13 or later.
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Downloading and installing apps: https://support.apple.com/en-us/HT204266
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Upgrading your device’s operating system: https://support.apple.com/kb/index?page=search&type=organic&src=support_searchbox_psp&locale=en_US&q=upgrade+your+iOS
Note: Two-factor authentication is not supported on the iPad.

Users of Android devices (e.g., Samsung, Google, Motorola, Asus, Xiaomi, One Plus, etc.) need to be on Android version 7 or later.
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Downloading and installing apps: https://support.google.com/android/answer/9457058?hl=en
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Upgrading your device’s operating system: https://support.google.com/android/answer/7680439?hl=en