'Panic Detection Mode

Google silently adds 'Panic Detection Mode" to Android 7.1 – How it's useful

I believe, several times in a single day because a large number of apps do not have an exit button to directly force-close them instead of going back and back and back until they exit.

Sometimes Android users expect the back button to take them back to the back page, but sometimes they really want to exit the app immediately.

Often this has severe usability implications when a majority of users are already dealing with their low-performance mobile devices and believe that clicking back button multiple times would kill the app and save memory, but it doesn't.