Users can activate their cash app ATM with the help of a QR code, the steps are as
follows:
Go to the Cash Card tab on the cash app home screen
Click on the image of the cash card and then tap on the Activate Card
The cash app will then ask for permission to use your mobile camera, click on the OK
button
Scan the QR code, to activate cash app card.
https://www.techjaadu.com/blog/activate-cash-app-card/