One such, is version 5.23.482.04 of Google Keep, which now qualifies and appears in the “default notes app” selection page in Settings > Apps > Default apps. If you don’t see this selection page, you have to enable it by toggling “force enable Notes role” in Developer Options.
The author (none other than reputable Android specialist Mishaal Rahman) has it that when the “default notes app” is launched from the lock screen shortcut, the device doesn’t need to be unlocked for the user to write down notes. When the device is unlocked and the user presses the stylus tail button to launch the notes app, the notes app will open in a floating bubble on top of whatever app is currently open.
He also notes that this new stylus note-taking feature is not yet “fully supported” by Google Keep. When you set Google Keep as the “default notes app” and then try to launch it from the lock screen shortcut, a message is shown to “update Keep to continue” even though you’re already on the latest release.
“Fortunately, we at least have a good idea about how the feature should work, given that I’ve already demoed this feature in full using another notes app a few months back. Plus, Google Keep has added some new settings in preparation for this new stylus note-taking feature, as shown below. These new settings let you decide whether to use the last lock screen note created or create a new note every time you launch the app from the lock screen or stylus tail button press” he says.
