Thank you for all of the passionate feedback regarding password protected sections in OneNote for Android! :) Although we can’t promise anything at this time, we are definitely considering this request.

Also, I’d like to respond to the comments from a number of folks alleging that the OneNote team doesn’t care about the needs of Android users. Please rest assured that this is not the case! Password protected sections is just one of the many improvements our users have requested, so we are forced to make tough decisions about what to work on first. Android is definitely a priority for us, and I promise our team is hard at work making OneNote for Android better!