Retrieval beats listening, and it isn't close
The reason a two-minute recap quiz is worth its slot is not that it's fun. It's that being asked to retrieve something you heard twenty minutes ago moves it from recognition into memory in a way that continuing to listen does not. Framed as a recall exercise rather than a game, it belongs in a serious technical programme.
Sponsors are buying conversations
Exhibitors do not evaluate a conference on footfall; they evaluate it on how many conversations they had that weren't chased down the aisle. Giving them a mechanic that makes attendees stop voluntarily is something you can put in a sponsorship prospectus, and it's easier to sell than another logo placement.
It doesn't require attendees to install your app
Conference app adoption is a well-known disappointment, and every participation mechanic behind an install gates itself to the minority who bothered. A QR code on a badge has no adoption curve. If you do have an app, link it from there and get both.
You get coverage a photographer physically cannot
Five hundred attendees photograph five hundred vantage points at once. For a post-event report, a sponsor summary and next year's marketing, that library is worth more than the staged shots — and it costs nothing beyond asking for it.
It travels across a series
If you run the same conference in six cities, the mechanics move with you and only the content changes. That is exactly the case the business and agency packages are built for.