Sao Paulo state in Brazil has a population of 41 million people, and is home to one of the busiest police forces in the world.
In 2010, its officers dealt with an estimated 43 million emergency calls.
Adam Shaw visits the Sao Paulo state force to see how innovative new technology is helping officers to keep the streets safe.
The force's toolkit allows it do do anything from monitoring traffic and road accidents to managing crowd control and fighting crime.
Amongst the many innovations, he discovers how a real-time database can monitor a criminal’s location and how a surveillance system keeps an eagle eye on the ground.