If you operate multiple retail stores that are not all located in Austria, you can decide at the subshop level in the plugin configuration, via the Use Fiskaltrust for this subshop field, whether receipt signing should be enabled or disabled.
Important: The plugin must always be enabled when you process sales within Austria. If you ever forget to enable the plugin, make sure to perform a manual retroactive entry for any sales made in the meantime. Otherwise, you will be in violation of the Austrian Cash Register Security Ordinance.