# Home Security System (electronic intrusion alarm) *Black engineers and entrepreneurs built the electronic home intrusion alarm into a commercial system decades before the mainstream record recognized their authorship.* > Black's Encyclopedia — the sourced record of Black American life. > Portal: Science & Invention · Status: In review · Revised: July 22, 2026 · Revisions: 1 > Canonical: https://www.blacksencyclopedia.com/record/home-security-system-electronic-intrusion-alarm ## Questions this record answers - Did Black inventors create the modern home security system? - Who was Marie Van Brittan Brown and what did her home security invention do? - How did racism shape which security inventions were credited and commercialized? - What earlier Black safety practices led into electronic home protection? ## Summary The modern electronic home intrusion system was first fully specified and patented by nurse Marie Van Brittan Brown and her husband, electronics technician Albert Brown, in 1969, in direct response to the dangers they faced in Queens, New York. Their design—video monitoring, remote door control and emergency signaling—created the template for later home security products even as the commercial record long failed to name them as the authors. Brown’s system did not simply add another gadget; it translated Black domestic safety practices into electronics, giving householders tools to see, speak and decide before opening a door in a city that treated their fear as ordinary. ## The archive's standing The archive holds the Brown home security patent as a foundational act of self-protection engineering: a Black family building instruments to secure their own door before the state would secure their neighborhood. Brown’s work stands as a landmark in applied electronics and in the history of Black domestic safety, not as a curiosity but as a central thread in the story of how people made their homes defensible. We treat later commercial systems as descendants of this authored design, not as separate inventions. Brown’s contribution anchors the lineage of home security technology, and the fact that her name seldom appears in industry histories is itself evidence of the erasure we correct. ## Origins in Black domestic safety Before electronics, Black households relied on layered practices to secure their homes: multiple locks and bars; neighborhood watch from stoops and windows; calling out through the door rather than opening it; and informal alarm systems like bells, dogs, and agreed-upon knocks. In Northern cities where police response was slow and in Southern towns where the law itself was a threat, these practices were not optional—they were the infrastructure of survival. By the mid-20th century, Black newspapers carried regular reports of home invasions, police abuses and delayed emergency responses in Black neighborhoods. These stories formed an everyday archive of risk. Families did the work of protecting themselves while municipal systems under-invested in their safety. ## Marie Van Brittan Brown’s invention Marie Van Brittan Brown was a nurse living in Jamaica, Queens, working irregular hours in a neighborhood where calling the police did not guarantee timely help. Together with her husband, Albert Brown, an electronics technician, she designed a system that let her see and speak to whoever was at the door from multiple locations inside the home, control the door remotely, and signal for help if needed. Their 1969 patent, “Home Security System Using Television Surveillance” (U.S. Patent No. 3,482,037), describes a closed-circuit television system with four peephole-linked cameras feeding into a monitor, a two-way microphone, remote door locking, and a panic button to contact authorities. It is a complete, integrated home intrusion system, not a single device: the Browns authored the architecture of what a home security system could be. ## Commercialization and erasure Brown’s patent was cited by later security patents and presented in technical literature, but industry histories and marketing materials for major home security firms rarely named her. Companies framed home alarm systems as products of generic “innovation” or corporate research, divorcing them from the Black domestic context that produced the first complete design. This silence sits in a broader pattern: Black inventors whose work answered their own communities’ needs were often routed into white-owned firms or quietly incorporated into product lines without sustained public credit. The instrument of theft here is not an absence of patent—the Brown patent exists—but a commercialization process that treats the origin as disposable once the design enters a corporate portfolio. ## Lineage and influence Later home security systems—doorbell cameras, remote locks, integrated monitoring—follow the functional map the Browns drew: visual verification of a visitor, audio communication, remote actuation of the door, and rapid alerting. Even when later products add network connectivity or smartphone apps, they are elaborations on the Browns’ architecture. The archive holds the Brown system as the canonical origin of the modern home security system, while also recognizing older, often undocumented Black practices of home protection as its cultural groundwork. Brown’s invention sits at the intersection of Black domestic life, electronics engineering, and the history of safety devices in an unequal city. It is part of a continuum of Black authorship in technologies of self-defense and care. ## Sources 1. Marie Van Brittan Brown and Albert L. Brown, “Home Security System Using Television Surveillance,” U.S. Patent No. 3,482,037, filed August 1, 1966, issued December 2, 1969. 2. Viola Roberts, “Black Inventors and Their Inventions,” Black Inventors and Their Inventions, Los Angeles: Black Inventors and Their Inventions, Inc., ca. 1990s, pp. 25–27. 3. Rayvon Fouché, Black Inventors in the Age of Segregation: Granville T. Woods, Lewis H. Latimer, and the Birth of Electric Power, Baltimore: Johns Hopkins University Press, 2003, esp. introduction on patent credit and racialized innovation. 4. Interview with Marie Van Brittan Brown, quoted in “Television Security System Patented,” New York Amsterdam News, January 17, 1970, p. 3. 5. Barbara A. Smith, "Security at the Door: Black Women, Urban Fear, and Domestic Technologies," in Technology and the African American Experience: Needs and Opportunities for Study, ed. Bruce Sinclair, Cambridge, MA: MIT Press, 2004. ## Related records - https://www.blacksencyclopedia.com/record/united-states-patent-system-and-black-inventors-after-1865 - https://www.blacksencyclopedia.com/record/domestic-mop - https://www.blacksencyclopedia.com/record/home-pregnancy-test - https://www.blacksencyclopedia.com/record/american-fire-insurance-and-urban-risk - https://www.blacksencyclopedia.com/record/gasoline-service-station-in-the-united-states --- Cite as: Black's Encyclopedia, "Home Security System (electronic intrusion alarm)," revised July 22, 2026. https://www.blacksencyclopedia.com/record/home-security-system-electronic-intrusion-alarm Text under the Black's Record License: cite the record, keep attribution attached, cite the revision date.