The whole world needs to hurry up and learn that what matters is what your employees really accomplished. You don't need to track hours, or clicks, or chat lines, or documents opened. You need to track that they're producing the accomplishments they were hired to accomplish.
Did they fix the software bugs you asked them to fix this week? Did they sign up 10 new customers today? Did they write that research report yesterday? Did they flip all the burger patties they were supposed to flip today?
As a manager, if you can't define productivity in real terms like that, and manage employee performance based on real work outputs, you're just doing it wrong. Someone else that does it right at a competing team or org is going to eat your lunch eventually.