This is cool:
"Researchers are testing medicine that uses tiny wireless technology to guide pills to just the right spot."
According to CNN, doctors are harnessing wireless GPS-like technology to deliver medicines inside your body. The idea is that treatments will be more effective if they can be targeted inside your body at the exact point where the problem is located. So instead of fighting intestinal cancer, for example, with a pill that dissolves in your stomach and sends the chemical everywhere, the wireless "iPill" keeps the medicine pure until it’s right next to the tumor. Then it releases the whole dose.
Think of it as the medical equivalent of using a targeted smart bomb down an air shaft – all courtesy of wireless technology.