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By sight, the widget is presented in the form of a Google Pay button, the process of authorization and payment of the order is started by clicking on this button. The widget independently requests for a token and pays. On the side of the online store, the response is processed and the response is returned to the customer.
Using the Google Pay widget allows customer to pay with regular cards stored to his Google account, as well as tokenized Google Pay cards. On devices without the installed Google Pay application, the customer will be asked to select a stored card from Google.