In 1972, gerontologist Andrew Dibner, Ph.D., came up with the idea for an emergency response system in answer to the question: "What would an elderly person do if he or she were alone and needed help?" Two years later, Dibner’s concept became a reality when he and his wife, sociologist Susan Dibner, established Lifeline Systems, Inc. Dedicated to finding solutions that support the independence of older adults, the Dibners began selling Lifeline Systems. To help even more people, in the late 1970s, they began implementing their call systems in hospitals and other healthcare centers in the U.S. and Canada. Healthcare institutions rented call buttons in a pendant or wrist band style to their patients and responded to their calls. In 1983, Lifeline went public, staying focused on evolving its technology and services. Advancements included waterproof call buttons that could be worn in the shower - one of the most likely places for a fall. They also centralized the call center to provide world-class services for everyone using Lifeline.