commercial advance vcrs

This isn't directly relevant to crypto, but it is a scheme to allow people to filter out unwanted media content. Has anyone heard of it, and does anyone know how it works? This is from TV Guide: CHEERS to commercial-free TV, or more exactly, Commercial Advance VCRs. Check it out: this month, RCA will unveil a VCR that skips past virtually all commercials during playback of a recorded show. Imagine: three minutes of commercials will whiz by in 10 seconds. The downside? This summer, commercials may be the most interesting things on network tv. -- Alex Strasheim, alex@proust.suba.com