Watching people or places to keep them safe or find out information. - Surveillance, The space between two points or places. - Distance, A device used to control something from far away. - Remote control, Protecting something or someone from harm. - Security, Something useful or helpful. - Utility, The right to keep things personal and not be watched or disturbed. - Privacy, Advanced or highly developed. - Sophisticated, Something that causes strong disagreements or debates. - Controversial, Tools, machines, or devices created by science to solve problems. - Technology,

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