Plain QR tickets are just text. Screenshot once, reuse forever. AdmitiQ is an open-source library for signed, expiring, single-use tokens for secure QR codes and ticket links. Vs plain QR or JWT hacks: HMAC/ES256 signatures, TTL expiry, optional single-use, same token in Python and JavaScript. pip install admitiq · npm install admitiq https://admitiq.logiclitz.org/tu... · by LogicLitz https://logiclitz.org