Last year, Natalia Esparra, then 34 and a new bride, learned that something had gone wrong with her photographer’s memory card and that all of her wedding photos had disappeared. Three recovery companies looked at the memory card, the backup hard drive and the laptop, but only 98 photos — none with the wedding party in them — were salvaged.

“It was absolutely devastating,” says Esparra, a veterinary technician in San Francisco.

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