Abstract: A receipt store may be provided as a service. Electronic payment receipts generated in any type of transaction may be delivered to the receipt store. A customer may subscribe to a particular receipt store, to be used as a repository for that customer's receipts. The customer may carry a device that is used to communicate payment information (such as a credit card number) to a device reader when purchases are made. The device may also identify the customer's receipt store. A commercial establishment that accepts the customer's payment may generate an electronic receipt, and may deliver it to the receipt store specified by the customer's device. The establishment may also deliver the receipt to the customer's device, and the customer's device may send the receipt along to the receipt store.

Abstract: Receipts may be received at a location that a customer normally uses to receive electronic correspondence, such as an e-mail address, an instant messaging address, etc. Among the items that are sent to that location, those items that contain a receipt may be identified. The identified receipts, or information extracted from such receipts, may be sent to a receipt store. An action, such as displaying the receipts to a customer, may be taken based on content stored in the receipt store. The information that is stored in a receipt store and/or that is displayed to customers may have an arbitrary level of detail.

Abstract: A receipt store may be provided as a service. Electronic payment receipts generated in any type of transaction may be delivered to the receipt store. A customer may subscribe to a particular receipt store, to be used as a repository for that customer's receipts. The customer may carry a device that is used to communicate payment information (such as a credit card number) to a device reader when purchases are made. The device may also identify the customer's receipt store. A commercial establishment that accepts the customer's payment may generate an electronic receipt, and may deliver it to the receipt store specified by the customer's device. The establishment may also deliver the receipt to the customer's device, and the customer's device may send the receipt along to the receipt store.