To find out exactly how many CCTV cameras there are in the world's 150 most populous cities, we consulted over 100 various sources, including Reuters, Global Government Forum and 360kuai.
Then we used WorldPopulationReview.com to find out the population of each city, and Wikipedia to find out the area in km2. We then used that data to calculate the number of cameras per 1 km2.
Which cities have the
Highest CCTV camera density?
The science of CCTV is a contentious issue. Does the reduction in crime justify the intrusion into our privacy? Are the authorities protecting us or controlling us? Here are the stats for all the cities in our study to make that grainy picture a bit clearer.