SPEAKING at the annual dinner of the Insurance Institute at Birmingham on Jan 22, Sir Kingsley Wood, Postmaster—General, said that the Post Office hopes to introduce in a few months' time a teleprinter exchange service. This system will probably be much used in the future by business firms. The new method enables letters, reports, and all kinds of messages to be type-written automatically between the offices of any two telephone subscribers, at any distance from one another. The typist in either office types the message, and it is printed simultaneously on the machine in the other's office. Both subscribers thus get a complete typed record of all the communications exchanged. The message can be sent at the speed at which the average typist works. To safeguard against wrong connexions, the sending subscriber presses the ‘Who are you?’ key. The distant machine at once transmits back its own exchange and number. The service will be available in London in the spring and in the provinces in the summer. Speaking of the British Industries Fair, Sir Kingsley Wood said that at the Castle Bromwich Section the Post Office would have an exhibit which would be connected with Olympia in London, so that the public could see how the system operates. The Post Office is apparently following out its new policy of advertising. We think this highly advisable, as much ill-informed criticism has recently been directed at it.