In one area of California, they are even using robots to patrol the streets. There, the police are claiming it's led to a reduction in crime and an increase in arrests. In New York they even experimented with a robot police dog, but with mixed results.

This and other cutting-edge technologies are helping the police – and the public - stay one step ahead, but they are often controversial.

In this programme we look at the some of the best ways that technology can make the streets safer.

Presented and produced by Ben Wyatt

Image: The Robocop K5

Repeat - first published 5 October 2021