RFID and QR hardware

QR works with any phone camera. RFID needs compatible tags and a reader your browser (or an optional helper) can talk to.

QR

Print labels from the QR label page (PNG, SVG, PDF or browser print). Scan here or with any camera app that opens HTTPS links. QR label · Scan

CFS tags use MIFARE Classic. Encode and verify run on the API; browser write uses OF1 Web Serial or USB, or an optional PC/SC helper. RFID

OpenPrintTag is a separate open NFC format (NDEF + CBOR), not CFS. Field preview is available; full binary encode is planned.