 In 1835, five years before the introduction of the worldwide first stamps in Great Britain, he suggested the introduction of adhesive tax postmarks ("aufklebbare Brieftaxstempel") to the Department of Commerce in Vienna, which was responsible for the postal system.These postmarks were to be used for the pre-payment of postage.He called them "gepresste Papieroblate" (pressed paper wafers), which are known today as stamps.