How to Make a Wi-Fi QR Code Plaque for Rentals, Hotels and Offices

A Wi-Fi QR code is different from a normal link code. Instead of opening a web page, it hands the phone your network name, password and security type in one go. The phone shows a prompt to join, the guest taps it, and they're online — no typing a long password with mixed-up zeros and O's. Printed as a plaque by the door or on the desk, it's one of the most useful things you can make with a 3D printer.

How a Wi-Fi QR code works

The code stores a short line of text in a widely supported format that looks like this:

WIFI:T:WPA;S:Beach House Guest;P:sunset2026;;

T is the security type (WPA, WEP, or nopass for an open network), S is the network name and P is the password. The built-in camera apps on iPhone and Android recognize this format and offer to join the network. In the QR Forge generator you don't have to type any of this — choose the Wi-Fi tab, fill in the fields, and the code is built for you.

One important point: your Wi-Fi details are generated into the code in your browser. QR Forge doesn't send them anywhere. That said, anyone who can see the plaque can join the network, which brings us to the next step.

Set up a guest network first

Before you print your password onto a permanent object, make sure it's the right network to share. Most routers can broadcast a separate guest network, and for rentals, offices and shops it's the right choice:

• It keeps guests off your main network, away from your computers, printers, security cameras and smart devices. Many routers isolate guest devices from each other too.
• You can change it independently. If you ever need to reset the guest password, your own devices stay connected.
• Use WPA2 or WPA3 security, not an open network, unless you deliberately want free public access.

Look for "Guest network" in your router's app or admin page. Give it a clear name, such as "Beach House Guest," so visitors know it's the right one.

Plan for password changes

A 3D printed plaque is permanent, so think about how often the password will change. If you rotate it between guests, a printed code isn't the right tool — a printed card or a small screen is easier to update. If the password stays the same for months, a plaque is perfect. When you do change it, you print one new plaque, which takes an hour or two on most printers.

Designing the plaque

1. Open the generator and choose the Wi-Fi tab.
2. Enter the network name exactly as it appears on a phone — it's case-sensitive — plus the password and security type.
3. Scan the on-screen preview with your own phone and confirm it joins the network. This catches typos before you print.
4. In the 3D Object tab, choose Wall plaque (or a tabletop stand for a desk or nightstand).
5. Add short text such as SCAN FOR WI-FI or the property name, and the 📶 emoji so guests know what the code is for at a glance.
6. Pick a high-contrast filament pair — a dark pattern on a light base is the most reliable.

Where to put it

• Near the entrance, at chest height, so it's the first thing guests see. Wall plaques work well next to a light switch or welcome sign.
• On the desk or nightstand in hotel rooms, using a tabletop stand.
• At the counter in a café or waiting room, where people naturally stand.
• Not behind glass or under a direct spotlight — reflections and glare make scanning harder.

Small double-sided mounting tape or a pair of adhesive strips is enough for a lightweight PLA plaque on most walls. In a hot spot like a sunny window or a car, PLA can soften and warp; PETG or ASA handle heat much better.

Add a backup for older phones

Most phones made in the last several years join Wi-Fi from the camera app, but not every device does — some laptops, older tablets and e-readers have no camera scanner. If you have room, add the network name and password as text somewhere nearby (a welcome card or the house manual) so nobody is stuck.

Other things you can link from a rental plaque

If Wi-Fi is covered, a second plaque or stand can link to:

• a digital house manual or check-out instructions,
• a local guide of restaurants and sights,
• the review page for your listing,
• a contact or maintenance request form.

Use the Link tab for these, and keep links short so the codes stay compact. For a step-by-step on the printing side, see How to 3D print a two-color QR code.