Robert A. Freitas, Jr. and colleagues have developed NCD (nanorobot control design), a software system that serves as a test bed for nanorobot 3D prototyping.

Nanorobots are tiny devices that will travel through arteries for diagnosing or treating ailments. The software is a fast development platform for medical nanorobots investigation. The NCD simulations show how to interact and control a nanorobot inside the body. The nanorobots could employ different sensory capabilities such as chemical and temperature sensors, as well as random movement.