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Tracking devices such as GPS receivers attached on a belt, necklace, shoe etc. can determine the position of the person wearing it. A person with dementia can use a GPS in her shoe and the device can alert relatives or care personell if the person moves outside a given area or is late home from a walk. This enables someone with e.g. dementia to take walks when she feels like it, and she can be taken care of if she gets lost.

Detectors and alarm systems can monitor, alert and act upon selected criteria (they are sometimes called smart house technologies). Lights, heating, doors and windows can be automatically controlled, and sensors can monitor and alert falls, fires, floods and similar. This can create greater security and independence in the living place.