The prompt will appear during the following activities
To authenticate your device, follow the prompt when it appears. It will ask you to accept, then a One Time password will be sent to your mobile phone number you have registered with Heritage. Enter in the One Time Password and your device will be authenticated.
This is a one time process. Once a device is authenticated you will not need to do it again unless you manually remove your device's authentication status in the app settings or disable SMS Security.