More than 7,000 people are involved in Rock in Rio's security system, including thousands of police officers. A dedicated aerial-monitoring centre watches for unauthorised drones.
Festival safety is increasingly becoming high-tech infrastructure, combining video analytics, drone detection, digital entry and healthcare monitoring.
Summary
Rock in Rio is preparing with a more complex safety system than ever before: thousands of police officers, a drone-monitoring centre and a dedicated phone-theft unit will all be on duty.
