On Android, your loyalty card adds to Google Wallet in a few seconds, with no extra app and no account to create. The step by step:
1. Scan the store's QR code
Open the Camera app (or Google Lens) and point it at the store's QR code. Tap the link that appears.
2. Enter your first name
The store's page opens: type your first name (email or phone only if the store asks for it).
3. Tap “Add to Google Wallet”
Confirm: your card is in Google Wallet, in the store's colors. At each visit, show it at the counter: the stamp is added automatically.