Digitally-enabled prescription medication may sound futuristic. Thanks to Proteus, the future is now. The company has developed the technology to place microchips inside prescription pills, allowing doctors to retrieve real-time updates on everything from dosing, to vital signs, to the efficacy of different medications. However, regulating and marketing such ground-breaking technology is almost as complicated as the medical conditions it can help cure. Professor Richard Hamermesh unpacks the challenges of changing the world of medicine.