Google's Android Pay has arrived – Google is introducing its mobile payments system, Android Pay, which is now available at more than a million locations in the United States.
The tap-to-pay system will compete with Apple Pay in the rapidly growing mobile payments market.
The market is estimated to be worth $1tn (£650bn) in 2017.
Technology companies are trying to convince shoppers to use their mobile phones, instead of plastic cards, to pay for their purchases.
Android Pay can be used with smartphones that have near-field communication (NFC) capability and KitKat 4.4+ operating system.
This will allow users to store their credit card details on their phones, as well as other data
Existing users of the Google Wallet app can access Android Pay via an update, while new users can download it from the Google Play App Store in the coming days.
Retailers including Macy's, Bloomingdale's, and Subway are among the first to join Android Pay, and more will follow.
Google's system will support credit and debit cards from providers including MasterCard, Visa and American Express, as well as banks including Bank of America, with Citigroup and Wells Fargo set to follow.
Instead of passing users' credit card details to a retailer, both Google and Apple's systems create a "token" so that the actual data is not revealed during a transaction, thus reducing the risk of data theft.
Last month, Samsung launched its own mobile wallet, called Samsung Pay, in South Korea.
It will be available in the US from September 28, with countries like the UK, Spain and China to follow.
Google yet revealed when Android Pay will be available outside the US.
