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In the world of corporate IT, technology advances often have a "one step forward, two steps back" feeling. Try to boost security by insisting on more robust passwords that have to be changed regularly, and users will write them down more.
This stutter-step nature of progress is going to be a key factor in the next generation of mobile interfaces, as gesturing in the air near the device becomes the preferred mode of interaction. Such gesturing has the potential to allow for an order-of-magnitude improvement in ease of use, with more diverse commands available, but before we get there, it has the much greater near-term potential for generating massive user errors.