What were barcodes first used for?

More Questions:

Which country were the 1988 Winter Olympic Games held in?

What comic strip character is Beetle Bailey's sister?

Who was dipped by the heel in the River Styx to give him invulnerability?

Long Island Sound separates Long Island from which state?

Who won a Nobel Prize for discovering Prions?

What country was margarine first patented?

What is the oldest known vegetable?

What country singer recorded a popular album at Folsom Prison?

What British TV series featured James Hacker, MP, and Sir Humphrey Appleby?

Who took the throne in the "Glorious Revolution" of 1688?

In 1966, Johnny Cash briefly shared a Nashville apartment with what other country legend?

Of which country did F.W. de Klerk become president in 1989?

What year was Buddy Holly born?

Which desert is located in the southeastern part of California?

Which country's official language is Amharic?