Emma Carr is the Deputy Director of Big Brother Watch, and she says the new initiative in Pontypridd sounds like "a bit of a gimmick".
"We know with CCTV cameras in general that they have little impact on minor crimes... and so having a CCTV on a policeman's chest, for instance, isn't necessarily going to bring down more than that police officer being in the vicinity at the time".
More top news
Calm and quiet overnight with clear skies at times. Temperatures will fall, but we should escape the frost!
A grieving mother broke down in tears as she recalled how doctors could not find out what was wrong with her son in the run-up to his death.
Carol Morse claimed her 12-year-old son Ryan dropped to just four stone but doctors failed to act, Cardiff Crown Court hears.