Excerpt
The federal government is making progress on developing a surveillance system that would pair computers with video cameras to scan crowds and automatically identify people by their faces, according to newly disclosed documents and interviews with researchers working on the project.
The Department of Homeland Security tested a crowd-scanning project called the Biometric Optical Surveillance System — or BOSS — last fall after two years of government-financed development. Although the system is not ready for use, researchers say they are making significant advances. That alarms privacy advocates, who say that now is the time for the government to establish oversight rules and limits on how it will someday be used.
There have been stabs for over a decade at building a system that would help match faces in a crowd with names on a watch list — whether in searching for terrorism suspects at high-profile events like a presidential inaugural parade, looking for criminal fugitives in places like Times Square or identifying card cheats in crowded casinos.
The automated matching of close-up photographs has improved greatly in recent years, and companies like Facebook have experimented with it using still pictures.
But even with advances in computer power, the technical hurdles involving crowd scans from a distance have proved to be far more challenging. Despite occasional much-hyped tests, including one as far back as the 2001 Super Bowl, technical specialists say crowd scanning is still too slow and unreliable.
The release of the documents about the government’s efforts to overcome those challenges comes amid a surge of interest in surveillance matters inspired by the leaks by Edward J. Snowden, the former National Security Agency contractor. Interest in video surveillance was also fueled by the attack on the Boston Marathon, where suspects were identified by officials looking through camera footage.
In a sign of how the use of such technologies can be developed for one use but then expanded to another, the BOSS research began as an effort to help the military detect potential suicide bombers and other terrorists overseas at “outdoor polling places in Afghanistan and Iraq,” among other sites, the documents show. But in 2010, the effort was transferred to the Department of Homeland Security to be developed for use instead by the police in the United States.
After a recent test of the system, the department recommended against deploying it until more improvements could be made. A department official said the contractor was “continuing to develop BOSS,” although there is no sign of when it may be done. But researchers on the project say they made progress, and independent specialists say it is virtually inevitable that someone will make the broader concept work as camera and computer power continue to improve.
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