When the iPhone X notch was first announced I thought it would be a fantastic security UI opportunity: What if the top of the screen was only writable by the system? It would normally be black or show the time, but whenever there is a password dialog, it turns green with a security lock. This is something I've wanted on all computers for a while: fundamentally, any computer where you can get access to the whole screen's buffer means you can fake a logged out screen asking you to log in, or any other number of phishing attacks. The only way to prevent this is to have a separate secure screen buffer for a special part of the screen that the user can use to visually verify the security of an operation. The notch provided an awesome opportunity for the because: 1) it was NEW screen real estate, it wouldn't feel like you were acquiescing existing screen space for this security need and 2) it looks absolutely horrible when integrated into apps anyways, so why not use it minimally for good reason instead?