Supermarkets use ________ to scan codes printed on product containers.
A)photoelectric cells
B)bar code readers
C)OCR readers
D)RFID microchips

Question

Quizplus · Accepted Answer

Supermarkets use bar code readers to scan the codes printed on product containers. Bar codes are a series of vertical lines of varying width and spacing that represent a specific product and manufacturer. The bar code reader uses photoelectric cells to detect the bars and spaces of the code and translates it into information about the product. OCR readers are used to recognize and read characters in text, not bar codes, and RFID microchips are a type of wireless identification technology that uses radio frequency to communicate information, but not all product containers have RFID microchips. Therefore, the best choice is B, bar code readers.

Supermarkets Use ________ to Scan Codes Printed on Product Containers