Rewrite of http://www.newscientist.com/article/mg21328516.500-your-heartbeat-could-keep-your-data-safe.html http://www.newscientist.com/article/mg21328516.500-y

Rewrite of http://www.newscientist.com/article/mg21328516.500-your-heartbeat-could-keep-your-data-safe.html http://www.newscientist.com/article/mg21328516.500-your-hear...