Kortho’s first ever Rolcoders were developed back to the 1950s. Despite many updates their operating technique has basically remained the same. Because this technique is 100% mechanical, a roll coder does not need an electric or compressed air supply. This makes the Rolcoder the most economical and robust coding technique on the market. Therefore, Rolcoders are still commonly used in settings where codings do not vary very much or in challenging environments where other coding techniques are not reliable enough.