Install Android Pie for Bixby Key Remapping
The Galaxy Note 8 gets a feature that debuted alongside the Galaxy S10.
Samsung used to prevent Galaxy Note 8 users from remapping the Bixby key. That changed with the arrival of the Galaxy S10.
If you want to remap your Bixby key you need to take care of a few things. First, you need to be running Android Pie on your Galaxy Note 8.
Once you're running Android Pie, you need to download the latest update to the Bixby application from the Galaxy Store. After you've done that, head into your Settings.
In your Settings, go into Advanced features > Bixby key and you'll notice that you can now set a third-party app to launch with a single or double press of the Bixby key. You can only select one of these.
If you're a Bixby user, this is a great reason to install Pie soon after it arrives.