Core Viewpoint - The "Key to Home" initiative, launched by the Central Radio and Television Station and Pinduoduo, addresses the urgent issue of safeguarding elderly individuals, particularly those with Alzheimer's disease, in the context of an aging society in China [1][3]. Group 1: Initiative Overview - The "Key to Home" initiative aims to help families of elderly individuals with Alzheimer's disease by providing a technological solution to prevent them from going missing [1][3]. - Since its launch at the end of 2023, the initiative has reached over 5,000 families across cities like Wuhan, Zhengzhou, and Qingdao, distributing keychains designed to assist in locating missing elderly individuals [1][9]. Group 2: Technological Solution - The keychain features advanced technology, including high-precision positioning via the Beidou system and a dual-mode tracking system that allows family members and passersby to assist in locating missing individuals [6][9]. - Families can apply for the keychain at local police stations, and after registration and assessment, they can receive it for free [8]. Group 3: Social Impact - The initiative not only enhances the safety of elderly individuals but also alleviates the burden on families and public resources, reflecting a collaborative effort among law enforcement, media, and businesses [12]. - The project has been recognized as a model of innovation in addressing the challenges posed by an aging population, promoting dignity and social efficiency [12].