PayWizard will be demonstrating the complete range of multi-device payment options, including an all-in Connected TV user interface, content discovery, and customer relationship and monetization solutions at CES 2012.

ENGADGET: PayWizard offers more ways to pay for content on Samsung smart TVs

Unlike those earlier tools, Nokia City Lens lets you freeze the view, so that you can put the camera down to choose your options without having to awkwardly hold your device in the air to continue seeing the overlaid information.

BBC: Best travel tech in 2012

In particular the web giant is exploring hardware authentication options and experimenting with a device called YubiKey -- a USB-based token system.

ENGADGET

The device seemed to handle the challenges fairly well, and while the options in the four-inch NAV category are nearly endless, the LN740 did a decent job of standing out.

ENGADGET: LG's LN740 GPS navigation unit gets reviewed

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