Parents and lawyers on Sunday urged Apple to *update its Siri service to prevent young people from accessing “distasteful” information. The appeal came after people reported online that Siri can be used to search for places offering sexual services. Siri, available for iPhone 4S, iPhone 5 and several other Apple products, is an intelligent personal assistant and knowledge *navigator. The company’s headquarters has issued no clear response to the complaints, but the information in question has been blocked on Siri.