How to Provide Wi-Fi Access via QR Code?

How It Works

The code contains the network name, encryption type, and password in a fixed format. Current smartphones recognize this and offer the connection directly.

Static, Not Dynamic

The code contains the access data itself – a server would be unnecessary and could even hinder the connection, as internet access would already be required for that.

Disadvantage: If the password changes, the code must be reprinted. However, this is rarely a problem for guest networks.

The Security Rule

Only for a separate guest network. A code that leads to the productive corporate network gives anyone who photographs it access to internal systems.

A guest network should:

• be separate from the corporate network
• not allow access to internal devices
• limit bandwidth
• have its own regularly changed password

Practical Tips

• The code should not be readable from outside through the window
• When changing the password, replace the notice – otherwise, support requests may arise
• A note saying "Guest Wi-Fi" prevents confusion

Legal

Liability for open networks has largely been abolished. Nevertheless, it is advisable to include a notice about the terms of use. Logging of connection data is subject to GDPR and should be limited to what is necessary.