Many families want reassurance that an older parent is safe at home, but do not want to install cameras in private rooms. There are several alternatives.
Wearables
Smartwatches and pendants can provide SOS buttons and fall alerts, but they depend on the person wearing and charging them.
Environmental sensors
Door, motion, bed, and room sensors can show whether normal daily activity is happening without capturing video.
Ambient radar sensing
Newer systems use radar-like sensing to understand motion and position while avoiding conventional video. This can make passive monitoring more private and less demanding for the resident.
What families actually need
The most useful system is often the one that stays quiet on normal days and only sends an alert when something meaningfully unusual happens.