the qr on paper you can do it with a marker. there is no need to laminate because you have the backup and you can make a new one any time.

put the backup on metal plates like the one i sent. make 2 or 3 backups in case anything gets lost.

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so, do you say that coldcard plates work with seedsigner too?

I have seen only the 5x5 and 7x7 QR codes

seedsigner works with qr code

backup is for your seed