Use Wifi? Thank Hedy Lamar.
In 1942, the Golden Age of film actress/Mathematician teamed up with composer George Antheil to develop a radio guidance system for Allied torpedoes using frequency-hopping spread spectrum technology. Though the technology was not employed until the late 50s, it was used during the conflict with Cuba and later would become the Bluetooth and Wifi we use today. The two were inducted into the National Inventors Hall of Fame in 2014.
Nathaniel Grauwelman as well as various staff and volunteers.