The Hands-Free Future

Say goodbye to grimy keyboards. Here are four innovations that merge man and machine

Using motion sensors, brain signals and a heap of creativity, several new technologies promise to do away with cramped typing fingers, videogame-fried eyes and hoarse phone voices. This past summer in Tokyo, for instance, a paralyzed man with electrodes attached to his head took his Second Life avatar on a virtual walk just by envisioning his character strolling. Engineers at a biotech start-up in Illinois are now testing a neck device that allows mute people to speak by intercepting nerve signals en route to the vocal cords, and a team of grad students at the Massachusetts Institute of Technology has devised a Wii-mote-controlled PC game for the blind.

Scientists already have the know-how to make mind control a reality. The rest is engineering, says Rodney Brooks, a roboticist at MIT. "It's only a matter of time before it will be normal for people to interface with the virtual world using direct connections to their brain," he predicts. "We'll be able to activate any of our machines just by thinking about it." It's a nifty idea for all of mankind, but even more so for those who struggle to talk, walk, and see. Click here to see the top notable mind-control devices making headlines.

Eyeball Remote: What Is It
Eyeball Remote: What Is It
An eye-gaze interface that lets you control your music player, camera or cellphone by rolling your eyes. Skip through tracks by looking right twice.Image by pixelgarden.com
Eyeball Remote: Who Makes It
Eyeball Remote: Who Makes It
Japanese telecom company NTT Docomo. Engineers demoed a prototype of the device in June.Photo by AP/Getty
Headphones equipped with electrodes
Eyeball Remote: How It Works
Headphones equipped with electrodes read electrical signals generated by eyeball movement and translate them into basic controls.Photo by AP/GettyAP/Getty
head-mounted camera
Eyeball Remote: Cool Features
A head-mounted camera allows you to snap pictures with the blink of an eye.Photo via TimTechs News
lightweight wireless neck device
Computer Speech: What Is It
A lightweight wireless neck device that helps people with speech disorders talkImage by pixelgarden.com
Ambient
Computer Speech: Who Makes It
Ambient, a biotech start-up in Champaign, Illinois. The company plans to begin selling the device next month.Photo via business.uiuc.edu
Computer Speech
Computer Speech: How It Works
The device adheres to the skin above the voicebox. It reads nerve signals and sends them via Bluetooth to a computer synthesizer, which processes them into audible speech.Photo by NASA Ames Research Center, Dominic Hart
rigged wheelchair
Computer Speech: Cool Features
The same tech can be used to let people with speech disorders talk on the phone or help paralysis patients operate a rigged wheelchair.Photo by NASA Ames Research Center, Dominic Hart
brain interface
Mind Control: What Is It
A brain interface that lets people with muscle disorders, spinal-cord injuries or serious carpal-tunnel syndrome control a keyboard just by thinking about itImage by pixelgarden.com
Researchers at Keio University in Japan
Mind Control: Who Makes It
Researchers at Keio University in Japan. The team helped a paralysis patient take the world's first online virtual walk last May.Photo via AFP
Second Life
Mind Control: How It Works
Electrodes intercept brain signals that control limb movement and send them to a laptop. The computer translates the signals into keyboard commands to let users move their Second Life avatar.Photo via pinktentacle.com
Second Life
Mind Control: Cool Features
The kit is completely portable. Shopping and socializing in Second Life are also possible using a mic and mouse.Photo via gtec.at
Sightless Gaming
Sightless Gaming: What Is It
A gaming alternative to Guitar Hero and Rock Band for blind people that rewards listening and dance-floor skills instead of hand-eye coordinationImage by pixelgarden.com
Singapore–MIT Gambit Game Lab
Sightless Gaming: Who Makes It
The Singapore–MIT Gambit Game Lab. The PC-based Flash video-game is available as a free download on MIT's Web site.Image by Singapore-MIT Gambit Game Lab
DJ tracks
Sightless Gaming: How It Works
Players layer DJ tracks on the computer and rhythmically shake a Wii-mote to make increasingly complicated beats.Image by Singapore-MIT Gambit Game Lab
Sightless Gaming
Sightless Gaming: Cool Features
Advanced players can generate their own sound effects in "Freestyle" mode. Read more about tomorrow's no-hands-required technologies in "The Hands-Free Future".Image by Singapore-MIT Gambit Game Lab