Thank Hedy Lamar for WiFi -
Hedy Lamarr was an Austrian-born American actress, inventor, and film producer. She appeared in 30 films over a 28-year career and co-invented an early version of frequency-hopping spread spectrum communication for torpedo guidance. She responsible for several advances in communication technology in the 1940s, which would eventually lead to the creation of Wi-Fi, GPS, and Bluetooth. Sadly, she never saw a cent from her inventions.
Learn more by watching Alexandra Dean's documentary about Lamarr called “Bombshell: The Hedy Lamarr Story.”