That is the reason you have an X-ray to vet electronics before allowing them into secure areas (with potentially secret sound and generic em-waves (from 200nm t

That is the reason you have an X-ray to vet electronics before allowing them into secure areas (with potentially secret sound and generic em-waves (from 200nm to 300000km aka 300Mm)). If you don't have that already, you don't have that much physical security...