[Cyborg] interesting patent

[Todd Anderson]

http://www.google.com/patents?id=NgiqAAAAEBAJ&pg=PA15&lpg=PA15&dq=%22wearable+tactile+Navigation+System%22&source=bl&ots=xG_M5_DAkQ&sig=VoNJKmV0UJkdQuxYEOCLNnKCX5k&hl=en&ei=ktL0SdH1KpC6tgPWt_HTCg&sa=X&oi=book_result&ct=result&resnum=6#PPA1,M1

The prior art section is quite extensive.
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