BARB viewing data gives broadcasters, advertisers and other interested parties a minute-by-minute breakdown of viewing at regional and national levels.
In the U.K there is a select panel of homes (approximately 5,000) which supply viewing patterns for the whole of the country. The households are chosen to include all variations including T.V reception and demographic breakdowns.
Every house is fitted with a special viewing box. This box records all viewing patterns by all people in the house, it also accounts for time shifting (up to 7 days from the scheduled programming) so data is captured from PVR’s (Personal Video Recorders), DVDR’s (Digital Versatile Disc Recorders), VCR’s (Video Cassette Recorders) and even set-top boxes.