Now Playing: 12-11-12 Marketplace Tech Report

Researchers in Baltimore have just begun experimenting with a kind of pacemaker for the brain. One patient has the system in already. Meanwhile, it’s gotten to the point that life in America may be practically impossible without a phone. A federally funded program that helps bring telephone landlines to low income people at little or no cost may soon be to bringing super-cheap cell phones to homeless people, among others.