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skinput


Presented By,
Aruna Arali

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INTRODUCTION
Skinput uses our skin as a medium for controlling a computer or other electronic gadgets.
Much of external surface area of human body is easily accessible by our hands.
Uses the concept of proprioception – our sense of how our body is configured in three-dimensional space – allows us to accurately interact with our bodies in an eyes-free manner.
WHAT IS SKINPUT??
Giving input through skin.
It was developed by Chris Harrison(Carnegie Mellon University).
It can allow user to simply tap their skin to control audio devices, make phone calls and navigate browsing systems.
TOUCHSCREEN vs SKINPUT





PRINCIPLES OF SKINPUT

It “listens “ to the vibration in our body.
“Skinput” also responds to various hand gestures.
The arm is an instrument.
CONDUCTIVE BODY PAINT
Our body is painted with a specially formulated ink that acts a medium to send the information from one person to another, transmit data from a person to computer.
Our gestures, movements or touch allow us to communicate with electronic devices directly.
The ink used is non-toxic and water soluble and is safe for skin application.
HOW IT WORKS?

It needs bluetooth connection.
It uses a micro chip sized pico projector to display menu.
Uses an acoustic detector to detect sound vibrations.
SKINPUT INTERFACE INPUT ARMBAND
.
When we tap our skin with our finger we generate
transverse waves that the sensor arrays can pick up. With high-speed
photography we can actually see these waves as they ripple outward
from the finger tap like those formed by a stone thrown into
pond.




You also generate compressive waves that travel through
the arm tissues until they reach the bone. The bone then acts as a
radiator, retransmitting new longitudinal waves that propagate
outward until they reach the sensor array (where they can be
measured, too).


Advanced signal filtering and detection techniques are
then applied to the sensors' ten channels of input to identify
which spot was tapped, turning the tap into a usable,
uniquely identifiable input signal.
OTHER APPROACHES
Glove-based input system:

Which allows users to retain most of their natural hand movements, but are cumbersome and uncomfortable.

Smart-fabric system:

That embeds sensors and conductors into fabric but is a complex and expensive approach.
ADVANTAGES
Interact with the gadget directly.
Don’t have to worry about keypad.
People with larger fingers get trouble in navigating tiny buttons and keyboards on mobile phones, with skinput that problem disappears.
APPLICATIONS
Computer interfaces.
Communication devices.
Such as mobile phones.
Medical devices.
Diagnostic medicine ,such as heart rate and skin
resistance to appropriately assess a user’s emotional
state.
LIMITATIONS
Though the band seems easy enough to slip on, it’s highly unlikely that most people will want it residing on their arms all day. Plus, unless you already use a Bluetooth device you’ll still have to reach for your cell phone to take that call.
Skin put is not available yet, but could be in the next few years.
CONCLUSION
Skinput technology provides an always available mobile input system that does not require a user to carry or pick up a device.
Using skinput technology, human body can be appropriated as an input surface to any of the devices ,system performs very well for a series of gestures, even when the body is in motion.





REFERENCES
Electronics for you magazine