The technology comes by way of a tear-drop shaped 4-inch, web-enabled refrigerator magnet with an LED screen.

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Each time, she kept the printout of his flight information behind a magnet on the door of the refrigerator, and on the days he was scheduled to fly she watched the news, to make sure there hadn't been a plane crash anywhere in the world.

NPR: Excerpt: 'Unaccustomed Earth'