Which of these retail consumer products was originally developed by NASA for astronomical research before becoming a commercial success?

Space exploration has always captivated human imagination, but it has also revolutionized consumer products in unexpected ways. Many technologies developed for astronomy and space exploration have found their way into our everyday retail experiences. Test your knowledge about how astronomical research has influenced retail innovation and consumer products that we use daily.

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Memory foam mattresses (originally developed to improve crash protection for astronauts)
Polarized sunglasses (originally designed for satellite solar panels)
Wireless checkout systems (derived from Mars rover communication technology)
Bluetooth headphones (based on radio astronomy signal processing)