Verb
record or express accurately in words or pictures
Every fan was of interest to security officials, who used tiny, hard-to-see cameras to capture a shot of each person who passed through the stadium gates.
Verb
guess or be aware of (what will happen) and take action in order to be prepared
The organizers of any huge sporting event have to anticipate trouble and try to stop it before it starts. Security officials at Tampa's Raymond james Stadium hoped to do so by using machines that recognize faces.
Noun
the application of scientific knowledge for practical purposes, especially in industry
People captured on camera were not told their pictures were being taken. None gave permission. The technology has not been proven to be reliable. What if the system points out an innocent person as a criminal by mistake?
Noun
a part or aspect of something abstract, especially one that is essential or characteristic
At a very basic level, it simply makes many people angry to see elements of a "Big Brother" society, where authorities spy on people wherever they go, in the United States.