What are the uses of RFIDs

O Protect goods in shops  1 bit transponder  Removed or deactivated at the till  A reader installed at the shops exit goes off if an items transponder is still active (Not been removed/ probably not been paid for) passes through it o Attached to products  Gives them a unique code  Items can be individually recognised o Passive transponders have access control which is means of restriction of certain areas o Passive transponders can be used for smart labels o Passive transponders can be used for races o Smart cards