Until 1894, all telegrams received in Germany were recorded using Morse code writers. The Reichspost stubbornly stuck with the telegraph, because written records were considered indispensable for later review. Such a reception strip has been archived here at the Gdansk Oberpostdirektion. From 1894, the Reichspost also used "knockers"—with these particularly loud telegraph relays, the official was able to write the telegraph just by listening to the Morse code.