Big Data, Law Enforcement, and the Fourth Amendment

Noting that "[t]he age of 'big data' has come to policing," in Policing By the Numbers: Big Data and the Fourth Amendment Elizabeth Joh (UC Davis) explores its impact in three discrete areas (mass surveillance, predictive policing, and DNA databanks) and considers the need to "draw new Fourth Amendment lines now that the government has the capability and desire to collect and manipulate large amounts of digitized information."