Is it possible to keep the Internet from realizing that you’re pregnant? That’s the question Princeton sociology professor Janet Vertesi set out to answer in 2013 when she discovered that she was expecting. Her nine-month experiment required her to think like a criminal about how she could go about leaving no trace of her bundle of joy in any of her email activity. She had to call family and friends and tell them not to talk about the pregnancy on Facebook. She and her husband bought baby products — like prenatal vitamins — in person in cash. When she did buy things online, she used Tor to mask her IP address and conceal her identity while browsing, bought items with gift cards from Rite Aid, and had them shipped to an Amazon locker so her home address wouldn’t be associated with the orders.