About input device

For this question, use your knowledge from reading or experience or imagine the possibilities. What kind of input device might be convenient for these types of jobs or situations?


a) An airport automated luggage-tracking system

b) A telephone worker who takes orders over the phone
c) A restaurant in which customers place their own orders from the table

d) An inspector at the U.S. Bureau of Engraving who monitors and gives a go/no-go response on printed money passing by on an assembly line

e) A retailer who wants to move customers quickly through the checkout lines
f) A psychologist who wants to give a new client a standard test