Just in case you weren't satisfied with the smorgasbord of options you already had when looking to control your iPod alternatively, researchers at Osaka University are hoping to shut you up. Thanks to new head gear that "uses infrared sensors and a microcomputer," individuals would be able to "operate music players by clenching their teeth." Essentially, the system "receives a command when the user clenches his or her teeth for about one second," which means that you can still chew gum and whatnot without getting it all confused. In the future, the team hopes to implement the technology into more devices, allowing folks to make funny faces to flip to the next slide in a presentation, answer a phone call, or even direct a wheelchair.

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Osaka University develops teeth-controlled iPod interface