There are more than 200 apps and services available today that act as surveillance tools with capabilities ranging from basic location tracking to intercepting texts, secretly recording videos, and various other forms of digital monitoring. Early apps were designed for keeping track of one’s children or finding a lost phone. Now many of these tracking apps are being used to stalk people surreptitiously, tracking their whereabouts, reading personal messages, secretly recording their phone conversations, and stealing passwords to financial and social media accounts, among other nefarious uses.