Skip to content
Sign in Create free vault

How to Create a Strong Wi-Fi Password and Share It Safely

By GenPass Team · Published

Your Wi-Fi password protects every device in your home, from phones and laptops to cameras and smart TVs. Yet many routers still use the default key printed on a sticker, or something like the family name plus a phone number. Here’s how to set up a strong one in about ten minutes.

Step 1: Generate a strong key

Wi-Fi passwords can be attacked offline: someone within range can record the moment a device connects and then guess passwords on their own computer at enormous speed, with no lockout. That’s why Wi-Fi keys should be longer than ordinary passwords.

  • Use 20 or more random characters. WPA2 and WPA3 allow up to 63.
  • Avoid look-alike characters (l/1, O/0) if you’ll ever type it on a TV or printer.
  • Never use names, phone numbers, addresses or the router’s default key.

The Wi-Fi password generator does all of this for you, using only symbols that work on every device.

Advertisement

Step 2: Change it on your router

  1. Open your router’s admin page. It’s usually 192.168.0.1 or 192.168.1.1, or the address printed on the router. Many ISPs also offer an app.
  2. Sign in. If the admin password is still the default (often admin), change it too, using a separate strong password.
  3. Go to Wireless / Wi-Fi → Security.
  4. Set security to WPA3-Personal, or WPA2-Personal (AES) if some devices don’t support WPA3. Never use WEP or “open”.
  5. Paste the new key, save, and reconnect your devices.

Step 3: Tighten the other settings

  • Turn off WPS, the push-button/PIN pairing feature, which has known weaknesses.
  • Update the firmware from the router’s admin page.
  • Create a guest network for visitors and smart-home gadgets, so they’re kept apart from your computers.
  • Rename the network (SSID) so it doesn’t reveal your name, flat number or router model.

Step 4: Share it with a QR code instead of reading it out

A long random key is awkward to dictate. Instead, enter your network name in the Wi-Fi password generator and download the QR code. Guests point their phone camera at it and tap to join; Android and iPhone both support this. Print it and keep it somewhere visible to visitors but not facing the street.

The QR code contains your password in plain text, so treat the printout like a key: put a copy for your guest network on the fridge, not your main network’s code on the front door.

How often should you change it?

There’s no need to change a strong Wi-Fi key on a schedule. Change it when someone who shouldn’t have access (a former tenant, flatmate or employee) knows it, or if you suspect an unknown device has joined. Your router’s “connected devices” list shows what’s on your network.

← All guides