The Tennessean, 4 Mar 11: Metro Nashville police use GPS to track gang members
...Police and the Tennessee Board of Probation and Parole announced a pilot program on Thursday that will track 10 convicted gang members to keep them out of "exclusion zones," areas their respective gangs have been known to frequent. Gang members found in those zones could face more jail time...

...Members from a variety of gangs were chosen because they were deemed likely to continue to cause problems, with previous convictions on charges ranging from assault and weapons violations to selling cocaine. Among the gang members identified by police now being monitored by GPS units are members of the Gangster Disciples, the Vice Lords, the Bloods and the Crips....
Interested to see how the results, and the inevitable legal challenges, will work out.