He also noted pawprints of large dogs, possibly bloodhounds used to track criminals.

As technology progressed, so too did the methods Tracy and the police used to track and capture criminals.

The police in the United States have used computer information from toll roads to track criminals.

It notes that balancing Internet privacy with the ability to track criminals is a "thorny issue."

"That's a rather ironic acronym for a system designed to track violent criminals."

He advocates creating a comprehensive government database to track criminals and terrorists.

This is necessary to track wanted criminals, but it raises the problem of coordinating privacy laws.

On the other hand, the police officials always supported the system, since this system allowed them to track criminals and suspects much more easily.

He was known for his ability to track criminals, especially in the expanse of wilderness.

Interpol can track criminals and crime trends around the world.