It's A Cow. No, It's a Coyote.

Technology may soon revolutionize U.S. attempts to patrol the flow of people, drugs and guns across its 1,900-mile border with Mexico. The sensors employed by the Border Patrol tend to be tripped off by every passing cow and coyote. Sandia National Laboratories in Albuquerque is developing a sophisticated new array of sensors that can transmit photographs of a trespasser to a central monitoring station, indicate direction and speed of movement, and also measure the presence of metal, a signal that the target is armed.

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