It is widely accepted that mobile phone users have graduated from simple voice and text handsets and hence we have smartphones almost taking over the world. But as you may well know, everything is just a trend until something better comes along. Enter the Skinput.

Chris Harrison an American university student, with help from Microsoft’s research lab, has created a system that allows people to use their own hands and arms as touchscreens by detecting the various ultralow-frequency sounds produced when tapping different parts of the skin.

Skinput uses microchip-sized “pico” projectors to allow for interactive elements rendered on the user’s forearm and hand.

An armband houses the projector along with an array of sensors which collect the signals generated by the skin taps and then calculates which part of the display you want to activate.

The result is an always available, naturally portable body interface. The acoustic detector can detect five skin locations below the elbow with an accuracy of 95.5%, which corresponds to a sufficient versatility for many mobile applications, according to the researchers. Does this mean that users will have the potential to become walking billboards?

It good news for those who always want to stay connected. According to a Tellabs survey conducted by The Nielsen Company, two-thirds of mobile users around the globe are interested in “smart” services that would feed them information based on personal preferences, location, time of day and social setting.