>>55101691It's an assembly line of hoppers that are fed boxed sleeves of an assigned card and then randomly distribute them throughout packs on the line. A floor employee would need to steal sleeves of cards in plain view of everyone else working the floor and, if they did so, the hoppers would detect the absence of their assigned cards and shut down the line until it was properly replaced.
They can, and have, however stolen cards at some point during the process.
