Scavenger Hunt
Find the item described in the clue, find it and enter the code (or scan QR code?) next to the item.
Alternative items - Words form sessions, Specific Speaker or Exhibitor or Sponsor, Social Events (Enter code at event).
Clues
How man exhibitors are on the trade show floor?
Find the code at the Keynote Address
Find code at the Platinum Sponsor booth
Our registration desk staff is wearing the code you want
Break time - see if you can find a code under something yummy.
icon, then selecting the "Add to Home Screen" / "Home Screen " / "Install" button in the list.";
icon, then selecting the "Add to Home Screen", in the list.