Which airline was the first to introduce a computerized reservation system (CRS) that later evolved into one of the world's first major customer loyalty programs?

The transportation industry has seen remarkable technological advancements over the decades, particularly in aviation. This poll tests your knowledge about a significant innovation that revolutionized how airlines manage their customer loyalty and booking systems. This technology fundamentally changed the passenger experience and created new revenue streams for transportation companies worldwide.

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American Airlines (with SABRE system, 1964)
Pan American World Airways (with WorldPass system, 1958)
United Airlines (with Apollo system, 1971)
British Airways (with Speedwing system, 1967)