Plastic EQR sticker on a suitcase. Serves the contact page you wrote for the finder's language — Greek in Athens, Japanese in Tokyo — and survives a hotel or SIM change mid-trip.
You supply one contact page per language; the resolver reads the browser locale and the country the scan came from and serves the matching one, falling back to your default when neither is on your list. Swap your hotel, phone number, or trip status from the EQR panel and the printed sticker keeps working.
Free tier includes 1 standard QR code. Upgrade to the paid Eternal tier for blockchain permanence and the recovery key.