Bail breaches are proving to be more challenging for police. 

A leaked police report shows people are taking advantage of the limitations of ankle bracelets by wrapping them with tinfoil and re-offending. 

Police Assistant Commissioner Naila Hassan told Mike Hosking that the percentage of people breaching hasn't changed, but the number of people on bail has. 

Hassan says the increased volume means more people are breaching bail conditions, making it a more demanding problem than six years ago.  

She says she can't comment on whether these people should be in jail. 

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