Poka yoke technique

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2. INTRODUCTION
PRINCIPLE
HOW IT WORKS
IMPLEMENTATION
ADVANTAGE
DISADVANTAGE
APPLICATIONS
CONCLUSION
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3. • Skinput is a technology which uses the surface of the
skin as an input device.
• To capture this acoustic information, they developed
a wearable armband that is non- invasive and easily
removable.
• It was developed by Chris Harrison, Densely Tan,
and Dan Morris of the Microsoft Research's'
Computational User Experiences Group(MRCUEG)
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4.  Skinput allows the user to simply tap their skin in order
to control audio devices, play games, make phone call.
 It uses the sensors to determine where the user taps on
their skin.
 Its first public appearance was at Microsoft's Tech Fest
2010
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5.  It listens to vibrations in your body.
 Skinput also responds to the various hand gestures.
 The arm is an instrument. Arm band detects the
acoustic signals and convert them to electronic signals
which easily enable the users to perform simple tasks
as browsing through a mobile phone menu, making
calls, controlling portable music players, etc..
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6.  Skinput, the system is a combination of two
technologies:
 the ability to detect the ultra low frequency sound 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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8.  A very small projector, basically used in gadgets The
system comprises three main parts:
 The Laser light source
 The Combiner optics
 The Scanning mirror
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9.  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
 These waves form the integral part of the whole
concept of skinput.
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Transverse wave propagation: Finger impacts displace the
skin, creating transverse waves (ripples). The sensor is
activated as the wave passes underneath it.
Longitudinal wave propagation: Finger impacts create
longitudinal (compressive) waves that cause internal
skeletal structures to vibrate

11. • These signals need to be sensed and worked upon.
• This is done by wearing the wave sensor arm band.
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12. • In Skinput, a keyboard, menu, or other graphics are
beamed onto a user's palm and forearm from a pico
projector embedded in an armband.
• An acoustic detector in the armband then determines
which part of the display is activated by the user's
touch.
• Their software matches sound frequencies to specific
skin locations, allowing the system to determine which
"skin button" the user pressed.
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15.  IMPLEMENTATION ON PARALYZED PERSON OR
PHYSICALLY DISABLE PERSON.
• If a 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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16.  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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• Through Skinput we can play games with just the movement of
our hands. This will introduce a totally new era of gaming.

18.  We can turn our arm into a cellphone It will be
possible to make calls by just typing numbers that flash
on your
 forearm [6]. All other functions can also be performed
using Skinput. We can also increase or decrease the
volume or
 change the track of our music players like the i-pod
without actually touching the gadget.
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19.  Easy to work.
 No worry about keypad.
 No interaction with the gadget.
 Can be used without visual contact.
 Naturally portable.
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20.  This technology only works on direct skin exposure .
We cannot use on full sleeves shirt.
 The visibility of the projection of the buttons on the
skin can be reduced if the user has a tattoo location on
their arm
 The arm band currently bulky.
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21.  Mobile
 Gaming
 I-pods
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22.  Skinput allows the human body as an input surface.
 It describes a novel, wearable bio-acoustic sensing
array that we built into an armband in order to detect
and localize finger taps on the forearm and hand.
 This system performs well even when the body is in
motion
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