“The technology came up empty even though both Tsarnaevs’ images exist in official databases: Dzhokhar had a Massachusetts driver’s license; the brothers had legally immigrated; and Tamerlan had been the subject of some FBI investigation,” the Post reported on Saturday.
Facial recognition systems can have limited utility when a grainy, low-resolution image captured at a distance from a cellphone camera or surveillance video is compared with a known, high-quality image. Meanwhile, the FBI is expected to release a large-scale facial recognition apparatus “next year for members of the Western Identification Network, a consortium of police agencies in California and eight other Western states,” according to the San Jose Mercury News.
Still, video surveillance did prove extremely useful in pinpointing the suspects"
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