Public to monitor CCTV from home

Firstly，I was surprised that people in UK can earn cash by monitoring commercial CCTV camera in their own home!
They not only watch but also start to make money. In Japan, respecting the privacy, definitely impossible! The proposer says that they want to combine a crime prevention with the incentive of winning money. I can`t understand the idea that they want to earn cash along with crime prevention. And it has a possibility that the scheme bring a new criminal. But it`s the fact that it`s difficult to save citizen in CCTV camera merely working. I always think that private camera for watching like a convenience store can`t hardly prevent a crime in advance. It hardly help before matters. So, this new project isn`t necessarily useless.