I have the following workflow with Androids custom keyboard: as soon as I need to login, I switch to 1p keyboard, unlock the vault, find login, profit!
However I constantly forget to press vault button (left bottom part of keyboard) and just start typing my master password away in whatever app/site I am looking at.
Now this is a major security risk - app or site can easily grab this input...
Why don't you just make 1 big button instead of regular keys until vault is unlocked? I do not think that anybody really using 1p as permanent keyboard, so won't be a problem. At least it can be an option.
1Password Version: 4.5b6
Extension Version: Not Provided
OS Version: Android 5.0.2
Sync Type: Dropbox