The man, who doesn't want to be named, showed Four Corners how he built his own proof-of-concept software, and is able to locate and track officers by the fixed, public MAC address assigned to any Axon bluetooth-enabled device.

The vulnerability is already being exploited overseas.

Border Patrol agents in the United States were reportedly told to stop using Axon body-worn cameras in the field last year after potential security risks with the devices were identified and an investigation launched.

Other hackers have shared instructional tutorials online.

"This is like quite an open secret," the man said.

Scary stuff. I sure wouldn't want to be walking around with a high-targetable beacon[†] #ACAB

†: in before "but ur phone blahblahblah" (don't own one)