I don't think there is any technical problem here if NFC tags are working fine with LN:
There is: wallet devs must implement the correct specs for that type of NFC payment. Is not just about to write a dumb LNURL-w on that NFC, is about some things more. https://github.com/boltcard/boltcard/blob/main/docs/SPEC.md
Right now only BoltCard Wallet, Breez and WoS have that implemented fully. All the rest still working on it.
reply