SHEFFIELD, UNITED KINGDOM - JUNE 1: An electronic tag is seen on the wrist of Nick Parnell as he watches one of seven flat televisions in the hi-tech 'Study Home', June 1, 2005 in Sheffield, England. The Parnell family will spend the next six months in the hi-tech home where all movements will be monitored by the University of Nottingham who will fit the family and any house guests with wrist tags that will log which rooms of the five-bedroom four storey house they use for three periods of two weeks. (Photo by Bruno Vincent/Getty Images)