Currently, the Verizon apps section doesn't allow for any special purchase options; you'll still have to use your Google Checkout account.

目前，Verizon应用程序部分并不允许任何特殊的购买选项，你依然必须使用Google Checkout账户。

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The checkout command has several options that control the checkout process.

checkout命令有几个控制签出过程的选项。

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When finished selecting items, Scan It shoppers either go to a self-checkout station to upload their bill and pay, or hand the device over to a cashier options that could, of course, involve waiting in line.

WSJ: Mobile Checkout Devices Let People Scan and They Shop