Watch TV Without Profanity! TVGuardian automatically mutes foul language while watching cable & satellite TV; movie channels like HBO, Starz, Showtime, Epix, Pay-Per-View and Video-on-Demand; and most DVDs. How does TVGuardian work? TVGuardian monitors the hidden closed-caption text in the background while you watch TV. Each word is checked against a dictionary of more than 150 offensive words and phrases. When a foul word or phrase is detected, TVG automatically mutes the offensive language. TV Guardian works with Close Captioning in US and Canada only. TVGuardian LT simply mutes foul language; it does not display closed captions. Works with any HDTV, Standard TV and/or Audio Receiver. Learns standard IR remote control codes to mute both a TV and an Audio Receiver. No HDMI cable connection required for HDTV muting. In fact, there's no cable connection at all from TVGuardian LT to your TV or Audio Receiver. Smaller than a smartphone. Connect two video sources: cable or satellite box, DVD Player, Blu-ray Player, VCR. Strict, Moderate and Tolerant Filter Settings. Fine-Tune Filtering Options: Offensive Religious References, Sexual References, Hell/Damn.