This document summarizes a project called CAALYX that aims to develop wearable devices to monitor the vital signs and detect falls of elderly individuals. The system includes a roaming monitoring system to track individuals outdoors, a home monitoring system for video communication, and a central care service to receive alerts and dispatch emergency services if needed. The goals are to increase autonomy for the elderly and reduce burden on future generations by ensuring the elderly can safely live at home independently with remote monitoring and assistance.