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Air Conditioning {Ans: Uses liquid to cool down air that is then sent out afterwards}Walkers {Ans: Tool for old people to walk on. William Cribes RobbSign}Wheelchairs {Ans: Chair situated on two wheels that can move}Near Field Communication (NFC) {Ans: Where a transaction occurs over radio waves. Used for transaction and goes through payment terminals}EFTPOS {Ans: Electronic Funds Transfer at Point Of Sale. To receive and verify funds through payment terminas}Vaccum Cleaner {Ans: Invented in 1860, sucks up dust using centrifugal separation}