
Jakub builds sophisticated video recognition software that can interpret hand postures as input commands for a computer. I believe using the hand itself as a symbol is less exploitative of typical hand use than using the hand to manipulate a tool: few populations use hands for symbolic communication, and even those that do it constantly (brokers, hearing-impaired) do it as a result of constraints (too much sound; not enough). Even those individuals use their hands for tool and object manipulation as much or more than they do for symbolic communication. Hands evolved before symbols–they’re tuned for manipulation, not representation.
I think the universal means of symbolic hand interaction here could be pushed back a level to be the universal technology of interpreted vision. And the means should be different tools–tuned for each different task.
The same software can be used to recognize tools, as Jakub has beautifully done in his human/machine image above. I believe this use could be vastly more effective for certain tasks because:

PDA’s have keyboards with text capacity of a PC. Although email function is similar, scalability of interface is not. Aside from voice, digital tools have been bound to our digits. Shouldn’t a universal controller be scalable? Must we always rely on our hands?
Rama Chorpash

I love the compiler. It is a universal tool for a universal machine. It is a word processor that processes words into works.
If you can imagine the steps, you can code them. But it is better than this because you don’t even need to imagine. If you start with a loop and improvise, you can discover what you can’t imagine.
John Simon Jr