For enhanced security: switch from SMS-TAN to the MobileTAN push method.
Also take a look at the most important FAQs about switching to MobileTAN Push.
INSTRUCTIONS:
Download of the BusinessNet App including activation of MobileTAN Push
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Download the BusinessNet App from the Google Play Store or the App Store.
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Start the App and login with your User ID and PIN.
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Register your device. You can also customize the name of the device for easier identification.
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Activate mobileTAN Push by clicking the button.
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Confirm the activation with your current TAN-method.
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Enter the TAN you received by SMS or CardTAN and sign.
INSTRUCTIONS:
Switch from SMS TAN to MobileTAN Push
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Login to your BusinessNet App. Go to "More", "Profile" and to "Push & Notification Settings".
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Check if the slider "Activate mobileTAN Push" is activated and click on "Activate".
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Confirm the activation with your current TAN-method.