Stop writing your Wi-Fi password on paper. Change it in under one minute and display it professionally.

What is it?

A compact device that displays the current Wi-Fi password for customers in public spaces such as cafés, restaurants, coworking spaces, and waiting areas.

Why did I make it?

Business owners want to provide Wi-Fi access to paying customers — not to people outside or previous visitors.

Most existing solutions are either:

• Too complex (captive portals, subscriptions, POS integrations)
• Too expensive
• Inconvenient for staff
• Or easy to share and misuse

This device offers a simpler alternative.

What makes it special?

• Very affordable
• No subscription
• No cloud system
• No router modification
• Extremely simple to use
• Designed specifically for small businesses

Product Description

In many cafés and public spaces, Wi-Fi passwords are written on boards, printed on receipts, or repeatedly given verbally by staff. These methods are inconvenient and allow passwords to spread beyond current customers.

This device provides a clear and controlled way to share Wi-Fi access.

It uses a small LCD screen to display the active Wi-Fi password. A dedicated area on the enclosure allows you to glue a printed SSID label (50 × 10 mm), so customers can easily identify the correct network.

How it works

1. A staff member presses a protected button to generate a new random password.
2. The staff member manually updates the router with this password.
3. Once updated, this password — which is now the Wi-Fi password — is displayed on the device for customers.

To reduce power consumption, the password is displayed only when customers press the central button.

(Please watch the demonstration video.)

Updating the router password takes less than one minute. After doing it two or three times, staff can complete the process very quickly. Most routers allow fast password changes through a simple web interface, which can even be saved as a shortcut.

This is not a complex IT system — and that is the point.

If your goal is to provide Wi-Fi access exclusively to current customers in a simple and low-cost way, this device is a practical and effective solution.

It is especially well suited for:

• Small cafés
• Restaurants
• Coworking spaces
• Waiting rooms
• Small public businesses

Installation Notes

To mount the enclosure properly:

• Align the lower edge of the wall-mounting piece with the lower edge of the enclosure.
• Align the left and right sides.
• Slide the enclosure slightly downward to secure it.

The PCB holes will align automatically with the wall-mount features.

Please refer to the final photo and video for guidance.

SSID Label

For the small paper label glued to the enclosure to display the Wi-Fi network name, there is an 50 × 10 mm rounded rectangle on the enclosure designed for this purpose. I have also prepared a Word document that contains two rectangles—one black and one white. Simply write your Wi-Fi network name in the document, print it, cut out the label, and glue it onto the enclosure.

This is the Word document—just click to download it.

PCB Only Option

Are you a hobbyist looking to build it yourself? You can purchase the PCB separately—just click here to get started!

Video