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If shoppers scan an unwanted item by accident, they simply select "Remove" from the menu option, scan the item again, and it is removed from the cart.
WSJ: Mobile Checkout Devices Let People Scan and They Shop
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Add it to a virtual shopping cart and then click the option to locate the item in store.
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And if you need the how-to instructions, click on the building guide mode - top left, third button - and it will give you the option to watch the item being built or alternatively you can generate a step-by-step building guide which you can then print out.
BBC: Lego Factory
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If your item is in high demand, this is a great option to expedite a sale.
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Curiously, individual customers turn out greatly to prefer paying a single fee for, say, unlimited text-messaging or 90 hours of telephone talk-time, rather than paying for each item, one at a time even though that might be a cheaper option.
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