surveillance

US /sɚˈveɪ.ləns/
UK /sɚˈveɪ.ləns/
"surveillance" picture
1.

bewaking, toezicht

close observation, especially of a suspected spy or criminal

:
The police kept the suspect under constant surveillance.
De politie hield de verdachte onder constante bewaking.
CCTV cameras are used for public surveillance.
CCTV-camera's worden gebruikt voor openbare bewaking.