https://www.cnet.com/news/android-q-beta-brings-a-notification-bell-and-wi-fi-sharing-with-qr-codes/

As Pixel users continue to dive into the software, Easter eggs are coming to light. The latest include QR codes for easier Wi-Fi sharing and the Notification Bell, so you can stay on top of alerts.

The QR code feature eliminates the need to rattle off a lengthy password if your friend wants to log on to your Wi-Fi. Instead, you open Network & Wi-Fi and then tap Wi-Fi. From there, you choose your network. Next to the Forget icon, you'll see a Share icon, which will generate the QR code for the other device to scan. Android Q requires you to verify with a password, PIN or fingerprint before it'll make the code though, Android Authority reported.