A method of showing approval or disapproval of an item overheard on an audio system. The method includes sending an item via radio waves to an audio system, listening to the item on the audio system and activating a button to indicate approval or disapproval of the item. ...http://www.google.co.uk/patents/US20020065037?utm_source=gb-gplus-sharePatent US20020065037 - Telematics application for implementation in conjunction with a satellite broadcast delivery system
