The FDA has issued guidance to implantable medical device users, such as those with pacemakers, to take precautions when using certain consumer electronic devices. They report that recent studies have shown that certain cell phones and smart watches contain high field strength magnets, capable of switching certain implantable medical devices to a “magnet mode” where normal operations are suspended. This mode is typically designed into devices to allow for safe operation during medical procedures such as MRI scans. The FDA recommends keeping any electronics capable of magnetic interference at least six inches away from any implanted medical devices.
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