GPS monitoring -- embraced as a simple technological solution for tracking the whereabouts of convicted sex offenders -- is proving to be something less than a silver bullet for state and local public safety agencies.
Convinced that GPS monitoring was the answer to the sex offender problem, judges and lawmakers began mandating the technology for high-profile parolees. Beginning in 2005, the technology was widely deployed as means to ensure that offenders complied with the terms of their release, such as staying a safe distance from schools or a victim's home.
Monitoring systems typically consist of a GPS receiver/portable tracking device, radio frequency transmitter, stationary charging unit, cellular telephone and computer software to review GPS data. The devices allow officials to track the parolees' whereabouts -- when everything works properly and when offender cooperates.
But there are problems with the way the technology is used and monitored. False alarms number in the thousands in some jurisdictions, straining manpower and casting doubt on the viability of GPS as a tracking tool for high-profile felons.
In Arizona, a 2007 legislative study found more than 35,000 false alerts by 140 subjects wearing the GPS-monitoring devices.
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