Christopher Null - One of the best little gizmos any shutterbug can buy for his or her camera is an Eye-Fi card. The Eye-Fi looks like any old SD storage card, but in reality it's much, much more. Put simply, a tiny wireless radio inside frees your camera from the hassles of the cord or from having to take the card out and plop it into your PC — leaving you then to figure out which pictures you haven't downloaded yet.

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