QR entry at a wedding: how it works, and where it stops
A QR card at the door is a faster way to find a name on a list. It works well when you know what it does, and plan for the guest who forgets their phone.
What the guest holds
After a household replies yes, its page shows an entry card with a QR code and the party size. The guest can keep a screenshot, though the code is personal, so it should not be shared online.
A family has one card for the household, not one for each person. The scan tells the door how many are expected.
What the door does
The person at the entrance opens a door link on a phone and scans the card with the camera. The page shows the household and the party size, and records the arrival.
The door link opens the check-in only. It cannot open your guest list or dashboard, and your own owner link does not work at the door.
Duplicate scans
If a card is scanned a second time, the door sees that it has already been used and counts the extra scan. That helps catch a screenshot passed around, and also a guest who simply scans twice.
Decide in advance what the door says: a quiet check with the household usually settles it.
Guests without a phone
Some elders arrive without a phone or with a flat battery. Print the final list for the door, and let the host recognise anyone known to the family. A QR is a convenience, never a reason to turn a relative away.
Ask guests to bring the card on screen, and keep brightness high at the entrance, since a dim screen reads slowly.
Privacy and honest limits
The QR holds a private token, not the guest's details in plain text. Still, the door person sees names, so brief them and have them check in only.
Check-in needs a phone with a working camera and a signal at the entrance. Test it at the venue before the night.