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Skinput
1. Department of Electronics and Technology
Technocrats Institute of Technology
Seminar topic
Skinput
Presented by:
Presented to: Himanshi Raikwar (0111ec131037)
Prof. Dilip Gandhi Koyal thepe(0111ec131044)
Niharika Shukla (0111ec131059)
Mehak Saxena (0111ec131051)
2. CONTENTS
• Introduction
• What is skinput
• How it works
• Principle of skinput
• Advantages
• Disadvantages
• Application
• Future
• Conclusion
7. History
• Skinput is developed by researchers (Harrison, Dan, Morris) .
• First introduced in Carnegie Mellon University in conjunction
with the Microsoft Research laboratory.
• Its First Public Appearance was At Microsoft's
Techfest 2010
8. Principals of Skinput
• It listen to vibrations in our body
• Skinput uses a series of sensors to track where a user tapes on his arm.
• Provide an always available mobile input system.
• The armband is an instrument.
10. 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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11. Transverse Wave Longitudinal wave
• Finger impacts displace the
skin, creating transverse
waves . The sensor is
activated as the wave passes
underneath it.
• Finger impact create
longitudinal(compressive)
waves that cause internal
skeletal structures to vibrate.
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12. Pico Projector
• It is also known as pocket projector or mobile projector.
• Displays Menu.
• The system comprises three main parts:
The Laser light source
The Combiner optics
The Scanning mirror
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15. Armband Prototype
• Two arrays of five sensing elements
incorporated into an armband
• Two sensor packages focus on the arm
of input
• One package was located near the
Radius other near the Ulna
• Signals transmitted though denser
bones
16. PROCESSING : MODEL
This is connected to a
system/PC via
bluetooth
A software to match
sound frequencies to
specific skin locations
is used
Corresponding action is
implemented to system
An audio interface is
captured from sensors and
is converted to form digital
signals
17. Processing (Detailed)
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SKINPUT
17
Employ a Mackie Onyx 1200F
audio interface to digitally
capture data from ten sensors.
Connected via
Fire Wire to a
conventional computer
Each channel was
sampled at 5.5
KHZ(55KHZ total)by
ATmega168 processor
Data was sent to our primary
application written in JAVA
19. BMI Index
• Susceptible to variations in body
composition
• Prevalence of fatty tissues and the
density/mass of bones
• Accuracy was significantly lower for
participants with BMIs above the 50th
percentile
20. • Through the help of skinput technology we can implement in
education system like we can use calculator or browsing through a mobile
phone etc…
• In making a call .
Implement in education system and making a call
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23. Advantage
• No need to interact with the gadget directly.
• Don’t have to worry about keypad.
• People with larger fingers get trouble in navigating tiny buttons and
keypads on mobile phones. With skin put this problem disappears.
• The body is portable and always available, and fingers are a natural input
device.
24. Disadvantage
• The armband is currently bulky
• This technology only works on direct skin exposure
• Skinput does not answer the incoming calls so we still have to reach in our
pocket, find our phone and answer it
• Accuracy depends on BMI index
26. Conclusion
This system performs very well
even if the body is in motion
In the future
your hand could
be your iPhone
and your
handset could be
watch-sized on
your wrist.
more
applications we
cant envision
yet
The technology itself is
intriguing, and may have
even
