a few years later jeffrey son derek saw a show on TV he found out some interesting news some doctors developed a small computer chip the chip can hold important information about a person such as his or her name address and telephone number it can also hold information about the person's medical history such as the kinds of medicine a person takes but the chip is only the size of grain of rice doctor can put it under the skin of a person's arm with a small needle than computer can read the information from the chip when someone comes to the hospital