Die-hard smokers puffing away near hospital buildings are being shamed into stubbing their fags out - by pre-recorded messages played on a speaker system. Pinderfields Hospital in Wakefield, West Yorks., is using the speakers to deter smokers from smoking directly under the windows of the maternity ward. Staff, visitors and patients can now push a blue button to activate one of nine pre-recorded messages, which are played via a loud speaker outside the hospital entrance where smoking is a prevalent problem. The messages include the voice of a child saying: "Please don't smoke outside our hospital.