This differentiator has until now allowed Amazon customers to complete a purchase with a single click from stored shipping and payment credentials.

This prevents customers from having to continuously add their shipping address and payment information. Amazon Echo owners can also complete a purchase with a single voice command.

The one-click feature has given Amazon a competitive edge over other online retailers, making it easier and more convenient for customer purchases, building loyalty and repeat sales. Anyone wanting to use it needed to license it from Amazon; Apple paid an undisclosed sum to use it for app store purchases. Once the patent expires, the door will open for them to launch one-click payment without bowing toward Seattle.

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