How can I see the people I've scanned and bring them up to date?

On the check-in application, how can I see which people have not been scanned in the sessions?

There are two ways to find out:

The first is by consulting the color code to the left of the participant:

- Green: Present (check in)

- Blue: Gone (checkout)

- White: Neither

The second is to check the "Present", "Left" and "None" tabs.

What is the name of the system field that brings up users checked at least once in the list of participants?

The name of the field that does this is: checkin.checked