For the former, the cellular provider (as mandated by a court order) forwards information from the site of the phone to law enforcement authorities, allowing these authorities to fixate the location of a subject and to proceed accordingly. For the latter, an audio device consisting of a transmitter, antennae and power source is attached to a person to relay interactive surveillance in a manner which is highly covert. No warrant or court order is required. Regardless of which of these myriad manners of tracking is employed, the primary objective of surveillance is to provide information which can be used as evidence to assist in the prevention of or the bringing of justice of those who have previously committed a crime. Consequently, tracking and surveillance have become integral elements in...

Foster, R.E. (2004). Police Technology. Upper Saddle River, New Jersey: Prentice Hall.
2. Manning, Allison. (2010). New Police Technology is Helpful but Costly. Retrieved from http://www.dispatch.com/live/content/local_news/stories/2010/11/14/new-police-technology-is-helpful-but-costly.html?sid=101

3. Pittman, E. (2010). Real-Life Police Technology Catches Up With Science Fiction. Retrieved from http://www.govtech.com/public-safety/Real-Life-Police-Technology-Catches-up-With.html

4. Schultz, P.D. (2004). The Future Is Here: Technology in Police Departments. Retrieved from http://www.policechiefmagazine.org/magazine/index.cfm?fuseaction=display&article_id=1527&issue_id=62008