HC Deb 11 July 1968 vol 768 c114W
28. Sir B. Janner

asked the Secretary of State for the Home Department whether he is aware of the development of the laser listener devices which can pick up from windows at a considerable distance conversations which are taking place within the room concerned; and whether he will take steps to protect the security of Government offices against such devices.

Mr. Elystan Morgan

I am aware of the development of these devices. My right hon. Friend has no general responsibility for the security of Government offices, but I can say that due account is taken of this technique where necessary.