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.

Q: 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.

Reasoning Although 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 Answer 1970s.

Difficulty: Easy

1950s
1960s
1970s
1980s

Correct Answer: 1970s

Explanation:

Reasoning
Although 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 Answer
1970s.

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