Idea and Conceptual Design Seniors Keeper Smart Door Lock by Jiang Wu Senior Keeper is a smart door lock connected with vital signs sensing devices, such as smartwatches. When the elderly encounter an emergency at home, it will emit a red light, project fonts for help, notify emergency contacts, and automatically open the door. When neighbours or rescuers find out, they can ask the elderly about their condition through the microphone on the door lock, and the elderly can answer remotely using the door lock's speaker. Finally, the rescuer can decide whether to enter the door to give help according to the specific situation.