| 摘要 |
A shopping cart that can be geographically located, methods for locating such carts, and a selection system for enabling a user to create a list of items on a portable computing device, to communicate with external devices to locate each of the items available on the list within a geographically limited area, to provide users with visual or aural cues as to the location of items on the list, to progress through the list of items as each item is selected or rejected, and providing discounts toward, information about, or alternatives to the available items on the list.
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