Big Brother production company Endemol selected RFID specialist Wavetrend to install the technology.
The tracking system enables the show's producers to monitor the movements and habits of the housemates. They are able to analyse where in the house the celebrities spend most of their time, and which housemates they are in close proximity with over the course of their stay in the house.
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The technology enables programme psychologists to interpret the celebrities' behaviour, and housemates voted off may be questioned about their movements in the Big Brother house using information derived from Wavetrend's RFID system.
Wavetrend has installed and commissioned 15 of its RFID readers across various points in the Big Brother house. Locations include the smoking area, bedrooms, diary room and bathrooms. The company has also provided its specialised "personnel" tags for housemates to wear throughout the series.
The show's viewers are able to watch the house floorplan via a studio display, which indicates each of the housemates with a tracking beacon. The data is then analysed to show movement patterns over a 24-hour period.
Show producer Gareth Collett says, "We were looking for a device to give a new dimension to Big Brother's Little Brother programme and personal tracking came up in a brainstorm meeting. Our aim was to work in conjunction with a tracking company to give us a constant stream of facts and figures that would complement the information received from the 24-hour television coverage already in the house."