TV May Be Everywhere, But Research Isn't

Throughout the history of television audience measurement, most people had access to the same viewing platforms and devices. When something new came along to either add additional channels or enhance the TV viewing experience, most people eventually bought it. This remained true through 2000, as VCRs reached about 90% of TV homes and DVRs were new technology. Measuring who was using each medium and device (although not necessarily how they were using them) was relatively simple.