Retail technology: In which decade were bar code scanners first introduced into commercial use at checkout counters? Context: UPC adoption in U.S. supermarkets culminated with the first live scan of a Wrigley’s gum pack. Choose the correct decade.
General Knowledge
Inventions
Difficulty: Easy
Choose an option
Answer
Correct Answer: 1970s
Explanation
ReasoningAlthough bar code concepts date to the 1940s–50s, commercial scanners at checkouts took off in the 1970s. The first retail UPC scan occurred in 1974 on a pack of Wrigley’s Juicy Fruit gum in Ohio.
Final Answer1970s.