Reference
🔗 URL / TextAny website URL or raw text string
💳 UPI PaymentIndia UPI deep-link — works with PhonePe, GPay, Paytm
📶 WiFiAuto-connects device to the Wi-Fi network on scan
🔵 BluetoothBluetooth device pairing — name + MAC address
👤 ContactvCard 3.0 — saves directly to contacts on scan
📧 EmailPre-fills email client with to, subject and body
📞 PhoneOpens dialler with the number on scan
Error Correction: L ~7% · M ~15% · Q ~25% · H ~30%. Higher levels tolerate more damage but produce denser codes.
Dash Array: SVG stroke-dasharray — "0" = solid, "4 8" = dashed, "10 5 5" = dash-dot.