The boy, who cannot be named for legal reasons, was handed a Criminal Behaviour Order in a landmark ruling which requires him to wear the Global Positioning System (GPS) tag for six months, The Mirror reported.
The offender must wear the electronic tag at all the times so that police can track and monitor his each and every step, the report said.
Initially, he was given a youth order but continued to offend, including threatening a 14-year-old girl with a replica firearm and brandishing a firearm in the street, it said.
Fed up with his behaviour, a judge ordered the boy's movements be monitored using a tag in April this year.
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Police Constable Mike Ellis, Oxford anti-social behaviour officer, said it was the first case in the country where an under-18 had been given the punishment.
"We believe there may have been a similar order made with an adult in London but this is the first in the country with a youth. I think it will be very successful not just in this case but also in the future," Ellis said.