Single CheckOut is exactly like Single SignOn, except that it secures payment end of the customer journey. Just like the customers have to enter in their shipping or billing details multiple times, the same is true for their payment details. However with Single CheckOut, Customers will be able to maintain their details online securely and privately across all websites without fear and annoyance. With a Single CheckOut every retailer who integrates will be giving their customers a single interface to enter their details once, then those details never need to be entered in again on any other website or app ever again. Customers can populate all their payments method in one place and then select their preference based on each transaction. Same thing can be done for delivery addresses.

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