These days, our artificial ears and eyes are better than ever—and more ubiquitous than ever. A business recently profiled by the New York Times seems to embody both what’s most promising about such pervasive surveillance and also what’s potentially disturbing.
ShotSpotter sells and helps run an automated gunshot-reporting system to police departments, for a cost of $40,000 to $60,000 per square mile. Recording equipment is installed in neighborhoods and linked software that records sounds that could be gunfire, analyzes them to identify which are actually shots, and then submits its findings for review by a trained employee in the company’s Mountain View office. If a human verifies that the sounds are indeed gunfire, the police are notified with the location of the shots, pinpointed to within 40-50 feet. All this can happen in well under five minutes, meaning police can be there right away.
In the justice system, a confession is often treated as proof of guilt—and yet, a surprising number of people confess to crimes they didn’t commit. In its latest issue, the Economist reviews recent research showing just how frequently innocent people ‘fess up, and what factors lead them to do it.
When an experimenter falsely accused subjects of crashing a computer, 25% of them confessed even though they’d done nothing wrong, one study found. If the accusation was corroborated by a (lying) eyewitness, that number jumped to 80%. Read More
What’s the News: While you may be able to hide your age with makeup and plastic surgery, don’t think that your deception is foolproof. Researchers have now developed a technique to ascertain your age to within five years using only your saliva. The new method, published in the journal PLoS One, could someday be used by forensic experts to pinpoint the age of crime suspects.