1.   Purdue University mass media researcher Glenn Sparks said parents should filter TV and other news sources that flow into the home.

2.   Several software applications enable parents to filter what words and images appear on the screen.

3.   Several software applications enable parents to rigorously filter what words and images appear on the screen.

4.   The ICRA is developing technology that allows parents to filter Web content based on individual preferences, which are matched to self-assigned ratings from Web site operators.

5.   There already is a prototype available of the proposed V-chip, a gizmo that supposedly will enable parents to filter what their kids see on TV.