Numerous applications are being developed around human touch based technologies(applications on iphone, ipad, etc.). I keep wondering how the devices that provide the human interface in the above cases will evolve in future . The five sensory receptors of humans(eyes, ears, nose, tongue, skin/sense) - have at different points in time given the opportunity to create different types of human interface devices(barring nose and tongue, not sure if I will see any HMI device using these organs in future).

Would skin/human touch based sensing interface devices manifest from time to time in different, improved packagings or would some company completley surprise us with a new concept(something like a human mind reader).

It would be great to hear from you guys how do you think the technology evolution in the HMI space is going to map out? Would it just be re-packaging and improvement of the touch sensing interfaces devices or would we witness a more fundamental change in human machine interface devices?