An anonymous reader writes "In the 1966 movie "Fantastic Voyage," scientists enter the submarine Proteus, which is miniaturized so they can go inside the body of Jan Benes and save him. While such feats may be a ways off, a new smart pill "enters and exits the body through preexisting orifices" and reports on what it finds along the way, including temperature and pH. Sounds a bit creepy, but apparently it can lickety-split diagnose a disease that otherwise requires lots of uncomfortable probing."
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