He kept in contact with his wife via WhatsApp throughout the day, discussing household matters, He could also monitor what was going on at home in real-time via a phone app linked to the six closed-circuit television (CCTV) cameras in the flat.

Source: https://www.channelnewsasia.com/singapore/police-officer-kevin-chelvam-piang-ngaih-don-maid-abuse-starvation-trial-3641516?cid=cna_flip_070214

Her alleged killer was subsequently at his student residence on 26 November after the police obtained from the closed-circuit television (CCTV) cameras in the vicinity of Parkmore.

Source: https://www.citizen.co.za/news/south-africa/courts/kirsten-kluyts-killed-8-minutes-arriving-sandton-race/

Portfolio Minister, Hon. Floyd Green, says plans are in place to utilise features such as geofencing and closed-circuit televisions (CCTVs).

Source: https://jis.gov.jm/agriculture-ministry-looking-to-boost-agro-park-surveillance-with-technology-integration/

Security features like closed-circuit cameras, round-the-clock surveillance, and an intercom system provide visitors with peace of mind.

Source: https://www.jewishpress.com/addendum/sponsored-posts/the-jerusalem-burial-society-on-the-front/2023/11/20/

The company’s patented, award-winning Circular Mineral Harvesting closed-circuit rare earths extraction process eliminates the need for a tailings dam and conditions spent clays for future revegetation with native forests.

Source: https://investingnews.com/ucore-announces-closing-of-final-tranche-of-private-placement-for-total-gross-proceeds-of-4-82-million/