Bones Could Become Conduits For Data Swaps

The idea is that the conduction of sound along bone would be more secure that via radio waves, leading to the possibility of swapping data with someone by shaking their hand.
This general idea was also tackled by Thomas Zimmerman doing research for IBM. His idea did the same thing using signals carried on the skin (which didn't need the FIRM handshake to work :) Not sure how that compares to this, but both manage the same trick.