Google’s Ice Cream Sandwich is a tasty Android upgrade

For a taste of sci-fi cool, the new system offers Android Beam, a handy way to let smartphones talk to each other simply by touching the devices. This feature will work only with Android phones that contain a special “near-field communication,’’ or NFC, chip, which sends out a tiny radio signal. Samsung and a few others have begun adding these chips to their phones, and a few retailers let you use such phones to pay for purchases. Instead of swiping a credit card, you just wave the phone over a scanner.

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