SKINPUTTECHNOLOGY ____________________________ _     By : Fenil Wakawala Guided By : P. D. Khambre
INTRODUCTION   Screens are smaller, cameras are    more ubiquitous, touch screen is    everywhere.   Mobility , flexibil...
1ST public appearance was at Microsoft’sTechFest 2010
What is “Skinput”?   Skinput is technology that appropriates    the human body for acoustic transmission.   Its allows t...
Mechanical phenomenon :   As the skin taps on the skin; acoustic    energies are foemed.   Two forms of the waves are fo...
   Sensors are activated by the waves    moving underneath it.   Transverse waves formed moves outward    form the point...
Cont…   Some energy is transmitted inward, toward    the skeleton.   These are longitudinal waves; excites the    bane....
Sensing :   Instead of a single sensing element    with a flat response curve, an array    of highly tuned vibration sens...
Cont…….   Cantilever is adjusted in the resonating    frequency.   Adjustment done by adding weight.   Irresponsive to ...
About the sensor design…    relatively inexpensive.   Can be manufactured in a very small form    factor, rendering it su...
Requirements :   An acoustic detector to detect    sound vibrations.   It uses a microchip-sized pico    projector to di...
Prototype armband :
The design :   The prototype features has two arrays of five    sensing elements, incorporated into an    armband form. ...
The processing :   Employ a mackie onyx 1200f audio    interface to digitally capture data form the    ten sensors. Each...
Key functions :   This program provides a live visuization of the    data from the ten sensors.   Its segments inputs fr...
Analysis :
Experimental conditions :   Fingers (Five Locations)   Whole Arm (Five Locations)   Forearm (Ten Locations)
BMI effects:1. BMI –Body mass index.2. to assess how these variations affectedour sensing accuracy.3. the participants wit...
Advantages :   The projected interface can appear much    larger than it ever could on a device’s    screen.Arm can be b...
conclusion :   The technology itself is intriguing , and have    more application other than always avaibility.   Skinpu...
Skinput technology
Skinput technology
Skinput technology
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Skinput technology

  1. 1. SKINPUTTECHNOLOGY ____________________________ _ By : Fenil Wakawala Guided By : P. D. Khambre
  2. 2. INTRODUCTION Screens are smaller, cameras are more ubiquitous, touch screen is everywhere. Mobility , flexibility , responsiveness are getting more demands. Microsoft puts forword a new flesh- control input technology called
  3. 3. 1ST public appearance was at Microsoft’sTechFest 2010
  4. 4. What is “Skinput”? Skinput is technology that appropriates the human body for acoustic transmission. Its allows the skin to be used as input surface, allows to interact with body in eye free manner. Was devloped by Chris Harrison(Carnegie Mello University),Microsoft Research.
  5. 5. Mechanical phenomenon : As the skin taps on the skin; acoustic energies are foemed. Two forms of the waves are formed: 1. Transverse. 2. Longitudinal.
  6. 6.  Sensors are activated by the waves moving underneath it. Transverse waves formed moves outward form the point of contact Transverse waves formed at soft part of the skin is of higher amplitude than the bony part of skin.
  7. 7. Cont… Some energy is transmitted inward, toward the skeleton. These are longitudinal waves; excites the bane. This excitation vibrates soft tissues surrounding the entire length of the bone, resulting in new longitudinal waves that propagate outward to the skin. The sensor is activated as these waves hits underneath it.
  8. 8. Sensing : Instead of a single sensing element with a flat response curve, an array of highly tuned vibration sensors are used. Bio –acoustic sensor, its employed with small, cantilevered piezo films.
  9. 9. Cont……. Cantilever is adjusted in the resonating frequency. Adjustment done by adding weight. Irresponsive to singal parallel on the skin; reduce the noise due other signal.
  10. 10. About the sensor design… relatively inexpensive. Can be manufactured in a very small form factor, rendering it suitable for inclusion in future mobile devices.
  11. 11. Requirements : An acoustic detector to detect sound vibrations. It uses a microchip-sized pico projector to display menu. It needs bluetooth connection.
  12. 12. Prototype armband :
  13. 13. The design : The prototype features has two arrays of five sensing elements, incorporated into an armband form. Each sensor array is sensible to particular set of frequencies: 1. Upper – low frequencies – fleshier. 2. Lower – high frequencies – denser bones.
  14. 14. The processing : Employ a mackie onyx 1200f audio interface to digitally capture data form the ten sensors. Each channel is sampled at 5.5 khz. This is connected to conventional desktop computer , where a thin client written in C interfaced with the device using the ASLO protocol.
  15. 15. Key functions : This program provides a live visuization of the data from the ten sensors. Its segments inputs from the data stream into independent instances. Classifies these input instances. The audio stream is segmented into individual taps using an absolute exponential average of all ten channels.
  16. 16. Analysis :
  17. 17. Experimental conditions : Fingers (Five Locations) Whole Arm (Five Locations) Forearm (Ten Locations)
  18. 18. BMI effects:1. BMI –Body mass index.2. to assess how these variations affectedour sensing accuracy.3. the participants with the three highestBMIs(29.2, 29.6, 31.9) produced the threelowest average accuracies.
  19. 19. Advantages : The projected interface can appear much larger than it ever could on a device’s screen.Arm can be brought closer to face (or vise versa ) to see the display close up. colour contrast can be adjusted by dimming the light so that a better picture will be visible if skin and the text are too similar in color during daylight.
  20. 20. conclusion : The technology itself is intriguing , and have more application other than always avaibility. Skinput is very intersting technology . But its fate will ultimately depend on how committed Microsoft is to making it a commercial reality and how soon.
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