Why a separate network
On a single network, everyone who joins sits alongside your laptops, printers, file shares, smart speakers and cameras. A guest network gives visitors internet access with a different name and password, and on most routers keeps them away from your own devices. If the password on the sign leaks, you change the guest password and nothing else.
Setting one up
Every router does this differently, so we won't pretend one set of steps fits all. In general:
- Open your router's app or settings page. The address and admin login are often on the router's label.
- Look for Guest network, Guest Wi-Fi or Guest access. Mesh systems usually have it in their phone app.
- Give it a clear name (“Juniper House Guest”), choose WPA2/WPA3 Personal, and set a password you're happy to print.
- Turn on the option that stops guests seeing your devices, if it's separate. It may be called isolation, “allow guests to see each other”, or “access local network”.
- Join it from your phone and confirm the internet works before you print the sign.
If your router has no guest feature, some internet providers' apps add one, or a second inexpensive access point can serve guests. Businesses should ask whoever manages their network.
What isolation does and doesn't do
- It usually stops guests from reaching your computers, printers and cameras.
- Some routers also stop guests from seeing each other, which matters in cafés and rentals.
- It doesn't hide what guests do online from the network owner, and it doesn't make an open network encrypted. A password-protected network (WPA2/WPA3) is still better than an open one.
- It doesn't stop someone with the password from using your internet. That's what changing the password is for.
Changing the password
A printed code can't update itself. When you change the guest password, every sign stops working immediately. Plan the change: make the new signs first, change the router, then swap the signs. Rentals often change it between long stays; cafés monthly or after a problem. Homes rarely need to.
Where to put the sign
Inside, where guests can see it and passers-by can't: by the bed or entrance in a rental, on tables rather than in the window of a café, at reception in an office. A sign facing the street shares your Wi-Fi with the street.