You can thank 1940s sex symbol Hedy Lamarr for today's Wi-Fi and Bluetooth devices
Lamarr and Antheil never profited from the invention, but it went on to become the core technology behind Wi-Fi networks and CDMA, or Code Division Multiple Access , cellphones. "The whole system spread like wildfire," Rhodes told NPR. "The most well-known application today is Bluetooth." All the while, the public has remained virtually ignorant of her contribution.