The law of search and seizure is built on flexible standards of reasonableness, transformed by courts into bright-line rules that balance the needs of law enforcement against the degree to which a particular police practice intrudes upon individual privacy interests. The third-party doctrine is one such rule, holding that police do not need a Fourth Amendment warrant to access information that an individual has voluntarily disclosed or conveyed to a third party, such as bank records or call histories. But the third-party doctrine is quite literally the product of another era—before ubiquitous networked computing, digital data, electronic communications, mobile technologies, and the commodification of information. Today, the digital devices that facilitate our daily participation in modern society are connected through automated infrastructures that are designed to generate vast quantities of data, nearly all of which are captured, utilized, and stored by third-party service providers. Under a plain reading of the third-party doctrine, however, the substantial majority of that data receives no Fourth Amendment protection—no matter how sensitive or revealing the information.