There are three ways someone gets marked as attended, and all three count exactly the same.
At the booth
Your event staff open their link on a phone or iPad, see everyone who RSVP’d, and tap Confirm met. They can add walk-ins, scan a resume, and leave notes without seeing anything else in your workspace.
Self check-in with a QR code
Put a QR code on the table. Scanning it opens a check-in screen where someone taps to check in. Outside the check-in window they see a friendly note that check-in isn’t open yet.
Automatically, during the window
A form submission or resume scan inside the check-in window counts as attendance and is marked that way, so nothing gets missed at a busy booth.
Check-in is always deliberate
An RSVP never becomes a check-in on its own. Someone has to actually check the person in — which is why your attendance numbers mean something.
Walk-ins
Anyone who shows up without RSVPing can be added on the spot with a name and email, and is counted as a walk-in rather than an RSVP.