Helping Hassled Flyers

With summer at its peak, airplane cabins are full, airports are extremely busy, and security agencies are on high alert. No matter. An array of new gadgets and gizmos is on the market, aimed at helping passengers deal with the crowds, discomforts and security hassles. Alongside a good book and a pair of sunglasses, they might just become this season's hottest travel accessories—don't leave home without them.

• Knee Defenders
Devices fit on your tray table to keep the seat in front from reclining too much. $14.95

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• Searchalert
Locks allow security...