Secret security system. To see where people are.?

Question by John: Solution protection method. To see in which individuals are.?
I want a set of movement sensors or a thing (not cameras) That do not set off an alarm so I can see exactly where individuals are in the home with out men and women figuring out. Any ideas? Many thanks :)


Best solution:

Solution by CircuitBoy
It seems like you will need to have some thing that journeys some type of switch when an individual walks previous it. 1 thing that does this is a driveway alarm:

http://www.teepeetech.com/driveway-alarm-system/driveway-alarm-evaluations-critique-various-driveway-alarms-four.html

It is not a digital camera but just a motion sensor with a remote receiver that will sound a beep or ding when a person or one thing walks previous it. They sell them on Amazon for fairly low cost.

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