Electronic register controls play a significant role in the modern printing process. They take over the register’s ongoing, program-controlled monitoring in web-fed printing and therefore provide reliable printing processes with first-class results. In the development of BST register controls, the specific requirements for the areas of implementation in web printing play a central role – from gravure printing to flexo printing and offset printing all the way to screen printing, for both inline and offline processes. The BST regi_star 20 register control significantly contributes to the automation of the processes in the printing process. Its use sustainably reduces set-up times and waste, while it increases the printing machine’s productivity. At the same time, a new hardware architecture with maximum flexibility was developed for the sophisticated BST product, so that additional functions can be integrated at any time. regi_star 20 is suitable for all common print methods on inline printing machines and is customized to current requirements dependent on the application.