A controversial piece of facial recognition technology (and a PopSci “Best of What’s New 2010” alum) is rolling out in police stations across the country this fall, and naturally not everyone is happy about it. The Mobile Offender Recognition and Identification System (MORIS) uses an augmented iPhone to snap pictures of faces, scan fingerprints, and even to image irises, and then combs through police databases looking for matching identities. This, understandably, has privacy and civil liberties advocates crying foul.

The MORIS device attaches to the back of an iPhone, adding roughly 1.75 inches to the thickness of the smartphone. Police officers armed with the tool can take a photo of a person’s face from about five feet away, or scan his or her iris from about six inches, and wirelessly beam that data to law enforcement databases elsewhere to look for a match. It can also perform remote fingerprint matching.