We are entering a world in which our day-to-day activities as private citizens leave us vulnerable to an officious police check on every bit of information that any source, public or private, has gathered about us.
Not only the guilty have reason to fear. As the Electronic Privacy Information Center wrote in its amicus brief in Hiibel's case, "a name is no longer a simple identifier: It is the key to a vast, cross-referenced system of public and private databases, which lay bare the most intimate features of an individual's life. If any person can be coerced by the state to hand over this key to the police, then the protections of the 4th and 5th Amendments have been rendered illusory."
