High-risk sex offenders on parole from Australia's state of Victoria will be fitted with GPS-enabled bracelets to allow police authorities track their every move.

Edward O'Donohue, Corrections Minister, made the announcement on Monday after some convicted criminals were able to escape detection because their electronic ankle bracelets did not have GPS tracking.

The first identified to wear the GPS-enabled bracelets are 30 serious sex offenders at the Corella Place facility in Ararat. These people, despite having served out their sentences, are still on supervision orders.

"The GPS technology is like the satellite navigation in your car, it gives real time information about your location," Mr O'Donohue said.

"So someone who is subject to an order Corrections Victoria will know where they are."

However, using the GPS system could cost Victoria a whopping budget. It could cost the government $12 million over four years, the Herald Sun reported.

"We're talking about serious offenders and it's important that the community has a comfort that Corrections Victoria knows where they are," Mr O'Donohue said, noting the technology, despite expensive, will improve community safety.

The scope of the GPS-enabled bracelet will also be expanded to include monitoring alcohol consumption as well as curfew conditions.

"We're hoping that they're used very modestly and in a very small number of cases and that vast sums of public money are not spent unnecessarily on sticking electronic bracelets on people who are quite capable of being subject to parole conditions," Jane Dixon of Liberty Victoria told the ABC News.

A total of 460 devices will be issued effective July, to be used at the court's discretion, Mr O'Donohue said.

A silent alarm will go off on both kinds of device, alerting authorities to any breaches as well as if offender tried to disable the device.