Career fairs
The booth is a line. The useful part is who actually stopped to talk.
The stack you will not sort
Someone stops at the table. You shake a hand. They take a resume. You take a card. Both of you pocket something that will live in a bag until it is trash.
Career fairs move on purpose. The next person is already waiting. There is no time to type, and the paper you collect is not a system.
One work card
Share the work contact. They already have a phone out — for the map, for a photo of the booth, for the next table. They save you there.
You are not hunting for a stock card in a box. You are not spelling an email over a loud PA. The card they get is the one you meant for this floor.
What you keep
You keep the people who stopped. Not every flyer that hit the table. Connections is the list of conversations, not the paper pile from the undergrad who grabbed everything.
If you tagged the fair as an event, that list stays attached to the day — useful when you write the follow-up on Monday and the booth banners are already down.
In this room
Stand the QR on the table next to the candy. Or show the link when someone asks how to reach you. One work card. A hundred booth conversations. No stack in your tote.