1. Presented By
Abhijeet S. Kapse
Guided By
Prof. S.B. Somani
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2.  Introduction
 What is Skinput
 Principle of Skinput
 How it works
 Advantages
 Applications
 Future Implementation
 Conclusion
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3.  Mobiles becomes ubiquitous
 Mobility, flexibility, responsiveness getting
more demands
 Devices with small sized have some
limitations
 Can’t make buttons and screens large
without losing benefit of small sized
 Microsoft introduces new flesh-control input
technology-”Skinput”
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4.  Collaboration between Chris Harrison at
Carnegie Mellon University and team of
Microsoft research lab.
 Touch-Screen gadgets have become popular
due to the advantages they come with
 Skinput turns the body into a touch-screen
interface
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5.  Skinput allow the users to simply tap their
skin in order to control mobile applications
 It applies the use of series of sensors to
determine where user taps on their arms
 Each part of body creates different types of
vibrations depending on features of bones,
muscle and tendons
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6. Bio-
Acoustics
Bluetooth Pico-
Projector
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7. Pico-Projector:
 Small Sized Projector to Display menu
 Widely Used in Gadgets like Mobile , Camera
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8. Bio-Acoustics:
 Study Of Sound waves inside living body
 When a finger taps the skin, distinct forms of
acoustics energy are produced-
Longitudinal waves
Transverse waves
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9. Transverse Wave Propagation Longitudinal Wave Propagation
• Finger Impacts creates • Finger impact creates longitudinal
transverse waves(ripples) (compressive)waves
• Sensor is Activated as • Causes internal skeletal structure
wave passes underneath it to vibrate
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10. • Wave Sensor Armband
• Responsive to the Vibrations
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11. Processing : Model
Vibrations are Captured
from Sensors and Converted
to Digital signal form
This is connected to
Mobile device Via Bluetooth
A Software to match sound
frequencies to Specific skin
location is used
Corresponding Action is
implemented in Device
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12. Fingers
•Tapping on tips of fingers
• Accurately Interact with eyes
free manner
Arm
• Maximum Surface area
• Provides 10 Different Locations
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13. Ten Channels of acoustic data generated by three finger
taps on the Forearm, followed by three taps on Wrist
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14. MITCOE

15.  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 keyboards on
mobile phones.
With Skinput that problem disappears.
 Can be used without visual screen
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16.  Mobile
 i-Pods
 Gaming
 Simpler Browsing System
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17.  Small Sized Pico-projector
 Wrist watch size sensor armband
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18.  We have presented the approach to
appropriating the human body as an input
surface.
 We described a novel wearable bio acoustic
array used to detect and localize finger taps
on the hand and forearm.
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19. 1) Chris Harrison, Desney Tan, and Dan Morris “Skinput:
Appropriating the Skin as an Interactive Canvas” Microsoft
Research 2011.
2) Chris Harrison, Scott E. Hudson “Scratch Input: Creating, Large
Inexpensive, Unpowered and Mobile Finger Input Surfaces”
UIST 2008.
3) Amento, B.Hill, W.Terveen “The Sound of one Hand: A wrist-
mounted bio-acoustic fingertip gesture interface” CHI’02.
4) Thomas Hahn “Future Human Computer Interaction with special
focus on input and output techniques” HCI March 2006.
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20. MITCOE