In a mechanism for attaching to a cart an RFID tag used for transmitting and receiving data to and from an RFID readerwriter, a holding pocket retains the RFID tag. The video input signal can be one of a two dimensional video signal and a three dimensional video signal. The light received by the protruding part directly enters or is reflected to enter the light guide, and then the light leaves the light guide to provide backlight. The present invention uses a processor based control circuit that operates the refrigeration system between ice-making and water chilling modes in such manner as to ensure that cold beverages will always be served. The formula I compounds inhibit tyrosine kinase enzymes thereby making them useful as anti-cancer agents.