"Talking" CCTV cameras that tell off people dropping litter or committing anti-social behaviour are to be extended to 20 areas across England.
They are already used in Middlesbrough where people seen misbehaving can be told to stop via a loudspeaker, controlled by control centre staff.
About �500,000 will be spent adding speaker facilities to existing cameras.
Shadow home affairs minister James Brokenshire said the government should be "very careful" over the cameras.
