warning for people with implanted defibrillators … If a person falls asleep with the iPad 2 on the chest, the magnets in the cover can “accidentally turn off” the heart device, said Chien, a high school freshman in Stockton, California, whose father is a doctor. “I definitely think people should be aware. That’s why I’m presenting the study.”
While the study was done with an iPad 2, any device that incorporates magnets can, in theory, cause the same effects.
via iPad 2 Heart Risk Discovered By 14 Year Old Girl | Defibrillators.