You enter your network name, password, and security type once. The QR encodes them, so a guest scans it and their phone joins the WiFi automatically without typing anything.
It is as safe as sharing the password itself. Anyone who scans gets onto that network, so use it for a guest network and keep your private network separate.
Yes. iPhone and modern Android read WiFi QR codes natively from the camera. Some older Android phones may need a QR scanner app.
Yes, as long as the network name, password, and security type stay the same. If you change the password, generate a fresh QR.
Common types including WPA and WPA2, plus open (no password) networks. Pick the type your router uses so phones connect cleanly.
Yes. Download a high-resolution QR and put it on a table tent or wall. Guests at your PG, homestay, or shop connect in one scan.