I am looking for any type of sensors that can help me to position family members inside the house in a particular room or a particular location.
How can I know that somebody is sitting at the dining table, so I can turn that particular light on?
Should I be looking at some pressure sensor for the chair? or some very short range motion sensor or some sort of heat sensor etc??? What solutions exist for this type of detection?
I also want a sensor for bed so I could do things automatically when i go to bed and lay down?
Could also be useful to count hours of sleep?
In general, what is available to location a person in a very specific part of the house aside from a general motion sensor?