When Luke Skywalker has his hand cut off in The Empire Strikes Back, he simply has it replaced with a mechanical one that looks, moves, and feels like a real hand. Now, whether you have lost your limb to a lightsaber or a disease, there is a real world equivalent to Luke’s bionic fist: the Smart Hand. Developed by EU researchers, the Smart Hand is a complex prosthesis with four motors and forty sensors designed to provide realistic motion and sense to the user. That’s right, Smart Hand is the first device of its kind to send signals back to the wearer, allowing them to feel what they touch. The first time I saw this, it completely blew my mind. Take a look at the video from BBC News after the break.

Generally when we’ve discussed haptics (sense of touch interfaces), it has been in relation to remote access or telepresence robots. At once, the use of haptics in prostheses is both more intuitive and more intimate. The ability to create feeling extensions of one’s body has implications beyond the (not so) simple creation of life-like limbs. We could see bionic replacements that augment human physicality beyond the normal limits. These replacements, if accompanied by an advanced sense of touch, would have all the benefits of a natural part of your body and yet function better. Full body replacement, or rather body displacement, is the stuff of science fiction movies like Surrogates. Yet if we find a way to perfectly translate mechanical sensation to human sensation, there would be little technological obstruction to extending our consciousness outside our biological bodies.
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