A password card nobody has to read out
The code carries both the network name and the password, so a guest scans once and joins — no spelling a password that contains both a zero and an uppercase O.
Password card code
PNG is exported at 1024×1024. Print at 2 cm minimum for a sticker or business card, 4 cm for a flyer, 8 cm for a wall sign.
How big should you print it?
What a guest actually scans
House WiFi
Encoded on this page. One code, both values — the guest never types anything.
Password card vs bare password label
A printed password on its own works fine for a home with two guests you trust. It stops working the moment the card is visible to people who are not your guests — a hotel lobby, a cafe counter, a shared office. At that point the code is the better version of the same information, because it removes the transcription step, not the exposure. Anything that can be photographed can be read, whether it is spelled out or encoded.
The difference the code does buy you is accuracy and speed. Nobody asks "was that a lowercase L or a one." Nobody asks the front desk to repeat it a third time. That is the whole argument.
What to print it on
Laminated guest-room card
Placed on the desk or taped inside the wardrobe. Laminate only if the print is large — 4 cm or more — since gloss interferes with scanning.
Counter card at reception
A5, matte, at eye level next to the sign-in sheet. Covers the "what's the WiFi again" moment without anyone having to ask.
Table tent
4 cm square, tilted toward the seat. Include the guest network name in visible text too, so someone can type it manually if the camera struggles.
Door sticker in a rental
Common where turnover is high and nobody explains anything. Add the check-out time in text beside it so guests know how long the code is good for.
Print the network name in plain text as well. If a camera fails to read the code, the guest can still type the network name and ask for the password. It costs one line on the card and removes the only failure mode a code introduces.
Security type: pick the right one
A WPA2 or WPA3 network is entered as WPA in the code — the field has three values (WPA, WEP, open) and WPA2 shares the WPA entry. Choosing WEP for a WPA2 network is the single most common reason a code scans but fails to connect. If your router calls it WPA2 or WPA3, leave it on WPA.
For an open network with no password, choose "Open network." The code then omits the password field entirely, which is what phones expect — a code with an empty password field is treated as malformed by some scanners.
WiFi password card questions
Should I print the password next to the code?
It depends on the audience. In a place where anyone can see the card, the code is not protection — it is convenience. Printing the network name in text is a useful fallback for camera failures; printing the password next to the code undoes nothing.
Why does the code scan but the phone still asks for a password?
Almost always the security type. A WPA2 network must be encoded as WPA. Check that first, then check that the network name matches exactly, including case.
Can one code work for both 2.4 GHz and 5 GHz?
Only if they share one network name (same SSID), which modern routers band together by default. If your bands have different names, you need two codes or one name.
How often should I change the guest password?
Whenever staff turnover makes it clear that old guests still have the old password. If you change it often, that is the point at which a dynamic code starts to make more sense than reprinting.
Does the code store the password anywhere?
No. It is drawn in your browser and never transmitted. Once you close the tab, the page no longer holds the value.
Need the longer version?
The WiFi hub page covers router setup and where to place cards.