The device we want is near at hand ..

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Chris,

> Could you play a guitar with your fingers numbed (from extreme cold or
> local anesthetic)?  Or a least play the guitar with gloves on?

tried it with glvoes, can do it, not sure why I'd want to.

> I think the answer is you need tactile as well as auditory feedback -
> hell I need visual and taste feedback too!

As martin pointed out, theramin?

Paul