Did you know that the CIA has its own venture capital fund? One that creates cool things that would make Jack Bauer jealous? Like a two-way radio you can hide in your mouth. It conducts sound through the bones in your head and gives people wearing it "the ability to receive incoming wireless sound literally without using your ears," Hadrovic explains. Instead of wearing headphones or earplugs, users attach the device to their teeth. Hadrovic says the device could even be shaped like a tooth.
This video shows how he can communicate even when the noise is around him is almost deafening: