Continuing our look at lie detection, we turn to some of the most recent technologies, many of which—from voice stress analysis software, to virtual policemen, to iris scanners—are driven by artificial intelligence (A.I.). and seem ripped from science fiction.

We continue our biometrics series with the first of a two-part entry on lie detectors. We begin with the polygraph—a tool proponents say can differentiate between truth and deception, and detractors say contributes to false confessions and racial bias.

In the third blog in our series exploring the use of biometrics, we take a look at Rapid DNA, a technology that dramatically reduces the amount of time needed to process forensic DNA evidence, but with few safeguards, standards, or regulations.

In the second blog in our new series exploring the use of biometrics, we take a look at iris recognition, a technology being deployed nationwide – from the Southern border to Massachusetts –but one that has yet to see the news coverage and public discussion that have surrounded other high-profile biometric technologies.

The Policing Project’s new blog series explores one of the more complex—and rapidly changing—areas of policing: the use of biometric technologies. For our first blog in this series, we explore face recognition, covering some common questions like, “How are police using this technology?” and “How does the technology work?”