As we go about our daily lives, we leave behind virtual breadcrumbs—digital records of the people we call, the places we go, the things we eat and the products we buy. These breadcrumbs tell a more accurate story of our lives than anything we choose to reveal about ourselves.… Digital breadcrumbs… record our behavior as it actually happened.

Shoshana Zuboff, The Age of Surveillance Cap…, loc. 1346