Passive home monitoring brings together small pieces of household activity. Understanding what each sensor actually records helps you read that information without assuming more than it can tell you.
What does “passive” mean?
Once installed and connected, the sensors report the events they are designed to notice without someone having to press a button or wear a device. PassiveAlert’s approach uses household sensors, with no cameras or microphones.
The information is about activity around the home. It is not a live view of a person, and it cannot tell you how they feel or why something happened.
Motion sensors: movement in a selected area
A motion sensor reports detected movement within its coverage area. Placed in suitable locations, sensors can add context to familiar patterns, such as activity in a hallway followed by activity in the kitchen.
A motion event does not identify the person who caused it. Other people in the home can affect the picture. Equally, no new event does not prove that a room is empty: someone may be sitting still or outside the sensor’s coverage. Positioning matters, so the setup should reflect the layout of the home.
Door and window sensors: a change of state
Optional contact sensors can report when a selected door or window opens or closes. That can add context to other activity, such as a door opening around the time of a planned outing.
A door opening alone does not tell you who opened it, whether someone left or whether they returned. It could be a visitor or a delivery. Read it alongside what you already know rather than treating it as a complete account.
Power sensors: appliance activity
Where a suitable power sensor is part of the setup, activity from a selected appliance can provide another clue to a routine. Kettle use, for example, may be one familiar part of a morning.
Appliance activity does not prove that someone made or drank a drink. The choice of appliance and sensor should be discussed as part of installation, so the information has a clear purpose and the equipment is suitable.
Connections and context still matter
Sensors, their batteries, the hub and the home’s internet connection all play a part in getting information to the portal. Missing or delayed information can have a technical explanation. Check how recent the information is and review any available device or connection status before interpreting a quiet period.
Agree with your relative which information would be useful and who can see it. Start with a clear question, such as whether there has been morning activity, rather than collecting information simply because a sensor is available.
A sensor event tells you something was recorded. It does not explain the whole situation. Use it to inform an agreed check-in, with space for your relative to tell you about their day.
PassiveAlert supports everyday reassurance. It is not a medical, emergency or fall-detection service and does not guarantee anyone’s safety.