Because of the use of the flyer/notice/digital screen, the staging and advertising is already an integral part of the hack, as explained in the first slide.
Remember that the hack can be put up in not just the restrooms, breakrooms, cafeterias, shuttle bus, etc, but in any location where passing employees are a "captive audience." The power of the hack is in how it reminds people to check if they know something (or not) and how it uses a no-pressure "access the learning resource if You wish" strategy, with incentives to bring employees aboard for learning. Those who claim they already know are also tracked, because they represent in-house knowledge/skills stock.
Instead of a tear-off flyer, some companies may prefer to implement this solution using digital screens or tablets instead of the printed flyer. If specifically requested by the Jury, I can provide some more details in private (I cannot post some details here, as there may be an IP protection issue. Thank you).