2. Introduction
Motivation
What skinput does?
Principle of skinput
Input location
Touchscreen and skinput device
How skinput works
Bio- Acoustics
Processing
Accuracy
Applications
Advantages
Disadvantages
Future implications
conclusion
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3. Skinput is named because it uses the human skin.
Skinput, is a sensor system.
Reduce gizmo accessories and multiple gadgets.
Skinput is collaboration between Chris Harrison at Carnegie
Mellon university and Dan Morris at Microsoft ‘s research lab
in Redmond Washington.
It first public appearance was at Microsoft ‘s tech fest 2010.
Chris Harrison Dan Morris
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4. Skinput turns the body into a touch screen interface.
Thus, we can use our own skin as input canvas.
The primary goal of Skinput is to provide an always available mobile
input system - that is, an input system that does not require a user
to carry or pick up a device
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5. Touch screen are familiar nowadays certain drawbacks of them are:
Limited interaction space
Less accurate interaction
Cannot make buttons and screens larger without losing primary
benefits of small size
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6. Primary functions are:
◦ Control audio device
◦ Make phone calls
◦ Navigate browsing system
◦ Play games
Uses series of sensors to determine where user tapped on skin.
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7. It “listens” to the vibrations in our body.
Skinput also responds to various hand gestures.
The arm itself is an instrument.
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8. Skinput, the system marriage of two technologies:
1.pico-projector
2.acoustic detector
Tiny Pico-projector applies the use of a projector in a handheld
device.
An acoustics detector determines where the user tap on arm.
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9. Finger
Whole arm
Forearm
To maximize surface we place sensor above the elbow.
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12. Pico-Projector
Pico projectors are tiny battery powered projectors - as
small as a mobile phone - or even smaller: these
projectors can even be embedded inside phones or digital
cameras.
Pico-projectors are small, but they can show large displays
(sometimes up to 100"). While great for mobility and
content sharing, Pico-projectors offer low brightness and
resolution compared to larger projectors.
It has the ability to project a clear image.
A Handheld projector (also known as a pocket
projector, mobile projector, Pico projector or mini beamer)
.
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13. The system comprises five main parts:
Battery
The electronics
The laser or LED light source
The combiner optics
The scanning mirrors
The electronics system turns the image into an electronic signal.
LED light sources with different colors and intensities down
different paths
In the combiner optic, the different light paths are combined into
one path, defining a palette of colors.
mirrors copy the image pixel-by-pixel and can then project the
image
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14. Study of sound waves inside living body.
When a finger taps the skin several distinct forms of acoustics
energy are produced.
Longitudinal waves
Transverse waves
Sensing element detect vibrations transmitted through the body.
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15. Longitudinal waves:
These waves travel through the rigid tissues of the
arm,exiciting the waves ,which can respond to the mechanical
vibrations by tapping on rigid body.
Transverse waves:
Tapping on soft regions of the arm creates higher amplitude
transverse waves.
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16. 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(compre
ssive) waves that
cause internal
skeletal structures
to vibrate.
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17. Each body part creates different type of vibrations depending on
bones ,muscles, tendons.
These signals need to be sensed and worked upon
This is done by wearing the wave sensor armband
Outside view
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18. A wearable bio-acoustic sensing array built into an armband.
sensing element detect vibrations transmitted through the
body.
Two sensor package shown below each contain five, specially
weighted ,cantilevered piezo films, responsive to a particular
frequency range.
Inside view:
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19. Detect vibration transmitted through the body.
Armband device consist of two component.
1.projector
2.Detactor
A Pico- projector embedded in an armband.
An acoustic detector in the armband then determines
which part of the display.
Armband are placed in two ways.
◦ 1.above elbow
◦ 2.below elbow
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20. Armband is connected to mobile device or computer via Bluetooth.
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21. An audio interface is
captured from sensors
and is converted to
digital signal form.
This is
connected to a
p/c system via
Bluetooth
A s/w to match
sound
frequencies to
specific skin
location is used
Corresponding
action is
implemented to
system
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22. To maximize surface area for input, we placed the sensor above the
elbow, leaving the entire forearm.
This increases input consistency.
Accuracy does drop when 10 or more location are used.
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25. Make phone calls
Gaming
Simpler browsing system
An aid to paralyzed people
I-pods
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26. Through the help of skinput technology we can implement in
education system like we can use calculator or browsing through a
mobile phone etc…
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27. Through skintput we can play games with just the movement of our
hands. this will introduce totally new era of gaming.
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28. If person is paralyzed or physically disable we can implement this
technology. the feature of skinput technology provides a projected
graphical interface on the skin ,so the person who is paralyzed or
physically disable they can use it easily like making a call, playing
game, control music player application etc.
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29. No need to interact with the gadget directly.
Skinput will bring a new way of operating a mobile phone.
Don’t have to worry about keypad.
People with larger finger get trouble in navigating tiny
buttons on mobile phones with skinput that problem
disappears.
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30. Skinput technology accuracy can degrade over time the
longer you wear it.
Technology might start up at very high cost which cannot be
affordable for the common man.
Not enough research has been conducted on this product to
the test possible skin diseases or types of cancer, one can get
from using this product.
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31. A person might walk toward their home, tap their palm to
unlock the door and then tap some virtual buttons on their
arms to turn on the TV and start flipping through channels
Extend accuracy level.
The most profound achievement of skinput is proving that
the human body can be used as a sensor.
Taps with different part of finger.
Research carried out for small wrist watch sized sensor
armband.
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