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Over the past months, federal law enforcement has used a wide variety of surveillance technologies to track down rioters who participated in the 6 January attack on the US Capitol building – demonstrating rising surveillance across the nation.

Recent news coverage of the riot has largely focused on facial recognition – and how private citizens and local law enforcement officials have conducted their own facial recognition investigations in an attempt to assist the FBI with the help of social media. But charging documents reveal that the FBI has relied on a variety of other technologies, including license plate readers, police