Cross-Technology
NFC vs QR Code
NFC offers dynamic real-time interaction with rewritable tags and cryptographic authentication, while QR codes provide static, zero-cost visual encoding that works with any camera. NFC requires a hardware chip at $0.03-$0.50 per tag but enables tap-based UX and anti-cloning.
Рекомендация
Choose NFC for repeated interactions and security-sensitive applications; QR for one-time, low-cost deployments where any smartphone camera suffices.