The new era of the touchscreen that we use in our daily life is the Touchless Touchscreen

1. TOUCHLESS
TOUCHSCREEN
TECHNOLOGY
BY
R. J. S. KASYAP
IV BTECH
EEE

2. CONTENTS
1)INCEPTION
2)HISTORY
3)WHAT IS TOUCHSCREEN?
4)TYPES, MERITS & DEMERITS
5)WHY TTT?
6)WORKING
7)GBUI
8)APPLICATIONS
9)MERITS & DEMERITS
10)CONCLUSION

3. INCEPTION
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4. “ HISTORY
- E.A. Johnson of the Royal Radar
Establishment, Malvern described
his work on capacitive touch
screens in a short article
Published in 1965 and then more
fully—with photographs and
diagrams in an article published
in 1967.
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5. WHAT IS A TOUCHSCREEN
Touch Screen is an important source
of input or output device normally
layered on top of an electronic visual
device. A user gives the input or
control the information processing
through single or multi-touch
gestures by touching the screen.
It enables the user to interact
directly with what is displayed,
rather than using any intermediate
device.

6. TYPES INVOLVED
⬡ RESISTIVE TOUCHSCREEN
⬡ Although this system is durable and
consistent, they can only handle one
touch at a time. That is why high end
devices most likely use capacitive
touch screens.
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7. CAPACITIVE TOUCHSCREEN
I phones, most mid-range to high ends
smart phone, tablets and computers use
this system.
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8. It is the less common and less
precise one. It consists of LEDs
and Light detecting photocells
arranged on the opposite sides
of the screen. The LEDs shine
infrared light in front of the
screen – a bit like an invisible
spider’s web.
INFRA RED TOUCHSCREENS
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9. Surface Acoustic Wave (SAW)
Touch Screen
Ultrasonic sounds which are
too high pitched for humans to
hear are reflected back and
forth across its surface. When
the screen is touched the user
interrupts the sound beam,
and the location of the touch
is calculated.
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10. MERITS
Direct pointing to the objects.
Fast.
Finger or pen is usable (No cable required).
No keyboard necessary.
Suited to: novices, application for information retrieval etc
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11. DEMERITS
 Low precision by using finger.
 User has to sit or stand closer to the screen.
 The screen may be covered more by using
hand.
 No direct activation to the selected function.
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12. INTRODUCTION TO TOUCHLESS
TOUCHSCREEN
⬡ Imagine a world you could control with your
hands. It was developed by Elliptic Labs.
This system depends on the finger or hand
motions, hand wave in certain direction, with
this your hand doesn’t have to come in
contact with the screen.
⬡ It requires a sensor, the sensor can be either
placed near the screen or on the table.
⬡ Elliptic Labs named it as “Touch Less
Human or Machine User Interface for 3D
Navigation”.
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13. 13
WORKING

14. 14
Place your screenshot here
Gesture
Based
Graphical
User
Interface
(GBUI)
Leap motion controller
is used to translate
hand movements into
computer commands.

15. MEANING OF MOTION
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16. MERITS
⬡ No drivers required.
⬡ No de-sensitization of screen.
⬡ Simple and user friendly.
⬡ Useful for physically handicapped
people.
⬡ The touch screen interface can be
updated with simple software
changes
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17. DEMERITS
⬡ The only thing is that you must know
how to use it.
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18. SOURCES PROVIDING TTT
⬡ TOBII REX
⬡ ELLIPTIC LABS
⬡ AIR WRITING
⬡ EYE SIGHT
⬡ POINT GRAB
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19. APPLICATIONS
The most common applications of any technology are also
included here as follows;
⬡ MEDICAL
⬡ DEFENCE
⬡ RESEARCH
⬡ SPACE WORKS
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Apart from these,
they include in
PUBLIC DISPLAYS
TECHNOLOGY
ASSISTING etc

20. CONCLUSION
⬡ Touch less Technology is still developing. Today’s thoughts
are again around user interface. Efforts are being put to
better the technology day-in and day-out.the touch less
touch screen user interface can be used effectively in
computers, cell phones, webcams and laptops. May be few
years down the line, our body can be transformed into a
virtual mouse, virtual keyboard and what not? Our body may
be turned in to an input device
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21. THANK YOU
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