http://www.klastv.com/Global/story.asp?S=4339886&nav=168Y
Colleen May
"There are two systems -- one uses cell phone technology to immediately notify authorities if an offender is breaking the law and the other stores information that the offender downloads on a hard line system. One of the main goals of the GPS tracking system is to gather more information about offenders when they are not at home. Offenders wear a bracelet around their ankles that is electronically tethered to the GPS device around their waste. It records their movements throughout the day. "
