Domestic abusers will be made to wear electronic tags when they are released from prison in a bid to stop them going to areas they are banned from.
Around 200 criminals jailed for offences including physical abuse, stalking or harassment in London will be fitted with the GPS devices as part of a year-long pilot.
The £230,000 City Hall project, which will cover every London borough, will see probation staff alerted if an offender enters an area from which they are banned.
This could include an exclusion zone covering a victim's address, and will alert authorities if they are breaching an existing restraining order.
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