WLAN teilen ohne Passwortweitergabe.
Umfassende Anleitung für sicheres WLAN-Sharing in Privathaushalten, Ferienunterkünften, Cafés und Büros.
1. 1. Warum Klartext-Passwörter ein Sicherheitsrisiko sind
Handing out plain-text Wi-Fi passwords on notes or speaking them aloud creates permanent security vulnerabilities. Guests' devices stay saved in your router table indefinitely, and passwords can easily be shared with unauthorized third parties.
2. 2. Methode 1: Lokaler WLAN-QR-Code im Browser
Generating a Wi-Fi QR Code allows mobile devices to connect automatically without the user ever viewing or typing your plain-text password. Everything runs client-side inside your browser:
WLAN-Netzwerkdetails
100% Clientseitig • Keine Serverspeicherung
Live-QR-Vorschau
Warte auf SSIDGeben Sie links Ihren Netzwerknamen (SSID) ein, um sofort einen scannbaren QR-Code zu erstellen
3. 3. Methode 2: Isoliertes Gäste-WLAN (VLAN)
Enable your router's Guest Network (SSID Isolation) feature to keep visitor devices isolated from your private computers, printers, and smart home hubs.
4. 4. Methode 3: Natives Teilen auf iOS und Android
Both Apple (iOS 11+) and Android (Android 10+) offer built-in peer-to-peer Wi-Fi sharing over Bluetooth and Quick Share when devices are in close proximity.
5. 5. Methode 4: WPS-Taste am Router
WPS allows client devices to connect by pressing a physical push button on your router within a 2-minute window without revealing passwords.
6. 6. Sicherheitsprotokolle im Vergleich (WPA3 vs WPA2)
| Protocol | Security Level | Recommendation |
|---|---|---|
| WPA3 (SAE) | Highest (Forward Secrecy) | Recommended for all modern Wi-Fi 6/7 routers |
| WPA2 (AES) | High (Industry Standard) | Universal compatibility across all smart devices |
| WEP / None | Unsafe / Open | Do not use (Vulnerable to packet cracking) |
7. 7. Häufig Gestellte Fragen (FAQ)
Is scanning a Wi-Fi QR code safe?
Yes, scanning a client-side Wi-Fi QR code is 100% safe because your credentials never touch any external server.