How to create an anti theft distance sensor

I would like to create an anti theft distance sensor that can detect a device being brought out of an enclosed area. Is there any transmitter or receiver i can use to construct that sort of circuit. I need to know exactly what components i can use for the circuit.

You tag them like stores do. If the object passes through the gate, it will sound an alarm. So you will need something simular to go around all your windows and door.

Im not sure what parts exactly, but it shouldn't be too hard to find with the help of a little research.

There is the option of an active tag that responds to a ping from the transmitter. When the system no longer receives any ping back it assumes it is removed and triggers an alarm. They use the same sort of thing to monitor patents in mental hospitals and old people with dementia.

I need to know exactly what components i can use for the circuit.

Come on this is a complex system we are talking about, you won't get a parts list in a forum answer.

Good day. did you finish you project? ca you please help me to if you do finished it. can you also show me some codes thank you so much..