Surveillance is the systematic observation and monitoring of a person, population, or location, with the purpose of information-gathering, influencing, managing, or directing. [1][2] It is widely used by …

Jan 8, 2026 · 404 Media has obtained material that explains how Tangles and Webloc, two surveillance systems ICE recently purchased, work. Webloc can track phones without a warrant and follow their …

The meaning of SURVEILLANCE is close watch kept over someone or something (as by a detective); also : supervision. How to use surveillance in a sentence.

SURVEILLANCE definition: a watch kept over a person, group, etc., especially over a suspect, prisoner, or the like. See examples of surveillance used in a sentence.

sur•veil•lance (sərˈveɪ ləns, -ˈveɪl yəns) n. 1. a watch kept over someone or something, esp. over a suspect, prisoner, etc.: under police surveillance. 2. supervision or superintendence.

Definition of surveillance noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Surveillance is the careful watching of someone, especially by an organization such as the police or the army. He was arrested after being kept under constant surveillance. Police swooped on the home …

SURVEILLANCE meaning: 1. the careful watching of a person or place, especially by the police or army, because of a crime…. Learn more.

SURVEILLANCE meaning: the act of carefully watching someone or something especially in order to prevent or detect a crime

SURVEILLANCE definition: 1. the careful watching of a person or place, especially by the police or army, because of a crime…. Learn more.