Digital Wallet

A digital wallet (e-wallet) consolidates credit cards, transit passes, boarding passes, event tickets, loyalty cards, and ID documents on a smartphone. Apple Wallet and Google Wallet are the most widely used, eliminating the need to carry physical cards and paper tickets.

QR codes and digital wallets interact in both directions. Scanning a QR code can add a pass to the wallet - an airline check-in QR code saves a boarding pass to Apple Wallet, and event tickets or coupons can be imported the same way.

The reverse flow is equally common. Passes stored in the wallet contain embedded QR codes or barcodes that users present for authentication or payment - movie theater entry, boarding gates, loyalty point accrual - all completed by showing the wallet's QR code.

In regions where NFC infrastructure is limited, QR code-based payments within digital wallets provide a hardware-free alternative. WeChat Pay in China and UPI in India demonstrate how QR codes can become the core payment mechanism of a digital wallet ecosystem.