it's a hard problem. I often open the phone to do something legit but then get distracted by a notificiation or unread count.
maybe a better solution would be "why?" when you switch or launch apps. Then being able to select apps that don't cause the prompt like camera and bank apps
This is my problem in a work context. I know I'm distractable, yet for security reasons I have to have a distraction device which I have to pick up and use for signing into certain applications.