>I was initially thinking about some sort of resistive element
>that when it was straight, it would read a value and as it was
>bent one way or another, the impedance would change thus giving
>a relative change.  Feeding that into a PIC would then drive
>either an array of LEDs or maybe a LCD or serial output for the
>feedback.

So what you are after is the kind of device used in gaming gloves, that 
sense how far the fingers have been bent.

Sorry, don't have a source of info. 

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