The V-chip works in conjunction with the TV ratings system to allow parents to block programming they do not want their children to see. After becoming familiar with the TV ratings, parents can identify the level of programming they want to block. Then, by following the directions in the TV manual, parents can set the V-chip to block programs with certain ratings. The settings are password protected and can be changed at any time. For more information, visit www.tvguidelines.org.