"No two fingerprints are alike," or so it goes. For nearly a hundred years fingerprints have represented definitive proof of individual identity in our society. We trust them to tell us who committed a crime, whether a criminal record exists, and how to resolve questions of disputed identity.

But in Suspect Identities, Simon Cole reveals that the history of criminal identification is far murkier than we have been led to believe. Cole traces the modern system of fingerprint identification to the nineteenth-century bureaucratic state, and its desire to track and control...