Marie Van Brittan Brown invented an early version of the modern home security method in 1966 with the help of her partner, Albert. Very simple yet highly Sophisticated for its time, Brown's method produced usage of peepholes, a shut-circuit digital camera method, a two-way microphone, and an emergency alarm. Its https://www.callupcontact.com/b/businessprofile/The_World_Protection_Group_Inc/8659641