THE HUMAN BODY AS TOUCH SCREEN

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THE HUMAN BODY AS TOUCH SCREEN

• Presented by-
• Suraj Duhan
• LC08570
• EECE-7th sem

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CONTENTS

• Abstract
• Introduction
• What is Skinput
• Principle of skinput
• How it works
• Advantages
• Applications
• Future Implications
• Conclusion

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ABSTRACT

• Devices with small sized have some limitations.
• Since cant make buttons and screens larger
  without loosing benefit of small sized.
• The main reason for appropriating the Human body
  as an input device are
• Easily accessible by hands.

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Introduction

• Skinput allows the user to simply tap their skin
  in order to control audio devices, play games,
  make phone calls.
• It uses the sensors to determine where the user
  taps on their skin.

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What is Skinput

• Giving input through skin.
• Was developed by Chris Harrison (Mellon Univ.)
• Skinput turns the body into a touch screen
  surface.

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Principle of Skinput

• It listens to vibrations in your body.
• Skinput also responds to the various hand
  gestures.
• The arm is an instrument.

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Technology Used

• Skinput, the system is a combination of two
  technologies the ability to detect the ultra low
  frequency sound and the pico projectors.
• Pico projector applies the use of projector in a
  hand held device.
• An acoustic detector detects the ultra low
  frequency.

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Pico Projector

• It is also known as pocket projector or mobile
  projector.
• The system comprises three main parts
• The Laser light source
• The Combiner optics
• The Scanning mirror

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Bio-Acoustics

• Study of sound waves inside living body.
• When a finger taps the skin, several distinct
  forms of acoustic energy are produced.
• Longitudinal Waves
• Transverse Waves

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• Longitudinal Waves
• These waves travel through the rigid tissues of
  the arm, exciting the waves, which can respond to
  the mechanical vibrations by tapping on a rigid
  body.
• Transverse WavesTapping on soft regions of the
  arm creates higher amplitude transverse waves.

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Bio-Acoustics Sensing

• These signals need to be sensed and worked upon.
• This is done by wearing the wave sensor arm band.

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Percent Accuracy
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Advantages

• No need to interact with the gadget directly.
• Dont have to worry about keypad.
• People with larger fingers get trouble in
  navigating tiny buttons and keypads on mobile
  phones. With skinput this problem disappears.

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Applications

• Mobile
• Gaming
• I-pods
• An aid to paralyzed persons.

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Future Implications

• With small sized Pico-projectors, Skinput
  oriented systems, are an emerging trend.
• Research is carried out for smaller wrist watch
  sized sensor arm band.

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Conclusion

• I have presented the approach to appropriating
  the human body as an input interface.
• I described a wearable bio-acoustic array used to
  detect and localize finger tap on the hand and
  the forearm.
• This system performs well even when the body is
  in motion.

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THANK YOU

• Presented by-
• Suraj Duhan
• LC08570
• EECE-7th sem