Fetching badges…
Buy NTAG215 stickers or cards (about $0.30 each online). NTAG213 also works — your URL is tiny. Both work with every modern iPhone and Android phone, no app needed to read them.
From your dashboard's QR tab, use "Copy badge URL for NFC". It includes a marker so taps show up in your stats as scans.
Install a free writer app — "NFC Tools" (iOS and Android) works well. Choose Write, add a URL record, paste your badge URL, then hold the tag to the top of your phone. Optionally lock the tag so it can't be rewritten.
Stick it behind your con badge, inside a fursuit paw, or on a phone case. Anyone who taps their phone on it lands on your badge page — no app, no account needed.
Download the PNG from your QR tab and print at 2 cm or larger. QR and NFC work great together — QR for posters and badges, NFC for taps.