How Google Wallet uses credit card numbers
Google uses the credit card and debit card numbers that you enter into your Google Wallet account to process payments for the online or offline purchases that you make using Google Wallet, including Google Play transactions and for fraud monitoring purposes. The Google Wallet Privacy Notice provides detailed information about how we use Google Wallet account information, including the information that we collect and how we share it. We only share personal information with third parties in the circumstances described in the Wallet Privacy Notice. The credit card and debit card numbers that you enter into your Google Wallet account are encrypted and stored on secure servers in a secure location.