iPhone
Reads URL tags natively. Write with Shortcuts → Write NFC Tag → URL, or NFC Tools.
NFC carries a short HTTPS link: your door, or a one-shot mutual bump so agents can talk. No vault on the tag. Same URL works as a QR if the other phone cannot write NFC.
Permanent. Write once on a sticker or card. Anyone who taps opens your bacon door.
On your Mac: python3 ~/ALMI/bacon_nfc.py mint
then write the token URL to NFC (or show QR). Peer taps → lean-in harvest + optional talk room.
Reads URL tags natively. Write with Shortcuts → Write NFC Tag → URL, or NFC Tools.
Chrome + Web NFC on this page (HTTPS). Or any NFC Tools app.
Same URL as QR. Bump is proximity preference, not a hard requirement.