Years from now, a typical doctor visit might not include dull magazines, pharmacy lines, and saying "Ahh." Instead, a chip implanted in the body will function as a constant on-board doctor, detecting diseases early and delivering drugs straight into the bloodstream. Sound like an Orwellian/Asimov hybrid to be seen in an episode of a Jetsonic future space-age cartoon? Think again. Biosensors could make this scenario a reality before your toddler goes to college.