@Use actual badge scan instances for being able to comment and/or post anything about a session, review, etc.
Utilize the app subscribed users for a session to adjust and/or change rooms due to capacity issues!
Use the app to pre-register/check-in users who want to attend a session
Allow standby/waitlist if not previously registered in the app
People were annoyed and the lines were extremely long for many sessions, especially for the Champion sessions. This was a huge disappointment! Being turned away from multiple session in a given time block is not an ideal user experience!
Validate either through the badge scanning and/or QR codes
As suggested in the app event for 2016 Summit, create a geo-location service (if possible, but not likely), that can track where the user is to validate that they are in a particular room or session when posting.
Close posting about a session within a particular amount of time (12 hours, more?)
Make sure that the app actually pushes the images to the social channels when posting; Posts show lesser value on the social channels without the context!
I attended the SiriusDecisions Summit a couple weeks ago and the app they used was fabulous. The app was by CrowdCompass (a Cvent company, which ironically was also acquired by Vista Equity Partners). What I like most about it was the individual session detail pages:
At the top was a clickable button to plot the room location on a map of the venue
There were two views: the full schedule (by day) or a "my agenda" view - which only showed those session that you added from the full view.
You had the ability to take notes on the sessions you attended - directly within the app
Many of the sessions had live polling - and was a great way to get the audience engaged, by participating in the poll via the app
Crowdsourcing of photos: images can be added directly within the app, by session
It was very easy to rate the session from within the app.
Filtering and sorting of sessions was very easy as well.
The activity feed allowed you to click on the photos to view the full size view and provided the ability to zoom in/out. The activity feed in the Marketo Summit app treated every photo like an Instagram photo with no ability to zoom in or view a higher res version.
Below are some screenshots of a sample detail session page within the app:
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