How to retrieve a Wi-Fi AP password on Android 11

In a place where I'm not so often, I had to configure my PC for the local Wi-Fi access point. I didn't have the password. But my Samsung Android phone (running Android 11) had been configured for this access point, some time ago. The following steps allowed me to get access to the password:

• with the Settings application, display the access point configuration
• at the bottom of the page, there should be a QR code icon
• click on it. This action displays a QR code containing information about the access point. But this information is not displayed in clear text
• use another device to read the QR code information. Don't use the default Android QR code reader application: it only declares the access point on the phone, without displaying any information