this a presentation on virtual keyboard you can use it freely but the credits should be given to IGNITE .

1. VIRTUAL KEYBOARD
BY IGNITE(group)
SUBMITTED TO cxxx||:::::::::::::::::> MR. Raj Kumar Mishra

2. IGNITE
INTRODUCTION
Vision
PPT DESIGN
Kushal
POSSIBILITY AND
USES
Ronish
RESEARCH ON HISTORY
ADVANTAGES AND
DISADVANTAGES
Pushan
INFORMATION FINDING

3. A virtual keyboard is a software component that
allows a user to enter characters. A virtual
keyboard can usually be operated with multiple
input devices, which may include a touchscreen,
an actual computer keyboard and a computer
mouse.
WHAT IS VIRTUAL KEYBOARD ?

4. Physical keyboards with
distinct keys comprising
electronically changeable
displays integrated in the
keypads
Virtual keyboards with
touchscreen keyboard
layouts or sensing areas
Optically projected
keyboard layouts or similar
arrangements of "keys" or sensing
areas IGNITE
TYPES OF VIRTUAL KEYBOARD
Virtual keyboards can be categorized by the following aspects:
Optically detected human
hand and finger motions
Virtual keyboards to allow
input from a variety of input
devices, such as a computer
mouse or other assistive
technology device.

5. OPTICALLYPROJECTEDKEYBOARD
A projection keyboard is a form of computer input
device whereby the image of a virtual keyboard is
projected onto a surface: when a user touches the
surface covered by an image of a key, the device
records the corresponding keystroke. Some connect to
Bluetooth devices, including many of the latest
smartphone, tablet, and mini-PC devices with Android,
iOS or Windows platform.
What is it?
IGNITE

6. HISTORY
IGNITE
An optical virtual keyboard was invented and patented by IBM engineers in 1992. It
optically detects and analyses human hand and finger motions and interprets them as
operations on a physically non-existent input device like a surface with painted or
projected keys. In that way it can emulate unlimited types of manually operated input
devices (such as a mouse, keyboard, and other devices). Mechanical input units can be
replaced by such virtual devices, potentially optimized for a specific application and for
the user's physiology, maintaining speed, simplicity and unambiguity of manual data
input.
In 2002, start-up company Canesta developed a projection keyboard using their
proprietary "electronic perception technology". The company subsequently licensed the
technology to Celluon of Korea.
A proposed system called the P-ISM combines the technology with a small video
projector to create a portable computer the size of a fountain pen

7. USES OF VIRTUAL KEYBOARD
INCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD
Mobility Impairments
This is perhaps the virtual keyboard's most important use. For many with severe mobility
impairments, using a keyboard is simply not possible. While speech-to-text is sometimes
useful, it's hard to match the versatility of an actual keyboard. As such, for someone who
can manage to move a joystick or a mouse but not a keyboard, a virtual, on-screen keyboard
allows for some---if not advanced---keyboard usage. This is a very important lifeline for day-
to-day computer usage.

8. USES OF VIRTUAL KEYBOARD
INCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD
Foreign Character Sets
Odds are, if you live in America, your keyboard doesn't include a variety of symbols
commonly used abroad---such as the symbol for currencies like the Yen or Euro, accented
versions of roman characters or Asian characters. A virtual keyboard can give you access to
symbols like this. While this isn't nearly as fast as a keyboard designed for a given language,
it's more than adequate for the occasional word or sentence.
Touchscreens
Touchscreen devices, such as the Apple iPhone and various tablet PCs, often use a virtual
keyboard instead of a physical one. The iPhone, for example, makes liberal use of a virtual
keyboard---you need to use it for any and all text input on the device. And while most tablet
PCs include physical keyboards, it's occasionally faster to use a virtual keyboard than to flip
out the physical keyboard.

9. USES OF VIRTUAL KEYBOARD
INCLUDING ALL; OPTICAL AND INBUILT SOFTWARE VIRTIUAL KEYBOARD
bypass key loggers
If you think a computer you're using might be compromised, or you simply don't trust
public computers, using a virtual keyboard is a good way to bypass any hardware
keylogging and most software keylogging programs. Use the virtual keyboard to enter any
passwords or sensitive information and you've got an added level of security
It is easy to use, convenient and user-friendly
Optical keyboards are very easy to use as they don’t require any hardware which increases
the rate of typing and it is also accurate as the sensor is very precise.
Input can be given from any where
Almost all optical keyboards use Bluetooth so the input can be entered from any place
Which makes the possibility very big.

10. Possibilities
The only limit is our imagination
IGNITE
Virtual keyboards have a lot of possibilities. Currently
development of thought input is progress which Is a new form
of a virtual keyboard instead of using optical sensor for fingers it
uses neuro-sensors to find what the uses wants to input
including format like it’s color, size, font.
And also research is going on for building a sensor keyboard
which is made of glass or plastic having optical sensor and it can
directly communicate with other devices to give input. Not
limited in it the sensor can be placed in any transparent material.

11. Advantages
IGNITE
Portability
One of the most important advantages of virtual laser keyboard technology is the
relative ease by which these devices may accompany smaller hardware. As
miniaturization takes over the mobile computing industry, the primary sacrifice is
quality data input. Smartphones, PDAs and even some computers are too small for
many people to reliably operate. Often, the type of activity on these devices is limited
by the size of their keys. Some users eventually get used to the size, but the larger
buttons of a regular keyboard will always make certain tasks easier. The virtual laser
keyboard is projected by a small device that easily travels with this other technology.
When connected, it allows a full-size keyboard to integrate with the device for all data
input. While it would be otherwise impractical to transport a separate, conventional
hardware keyboard, these virtual devices add this crucial functionality without
compromising the small size of this new technology.

12. Appearance
While not necessarily a practical consideration, it is important to note the
significant role that style plays in the development of portable technology. As
noted in the Pittsburgh Business Times in June 2002, the visual appeal of
mobile technology is as important in product success as actual functionality.
Unlike most forms of technology that have come before them, smartphones
and similar devices are enjoying trends similar to that of fashion, and many
consumers accessorize their lifestyles with this in mind. Virtual laser
keyboards fit well into this mindset because their function often draws much
attention. As the ultimate attention-grabbing example of their functionality,
some virtual laser keyboards can project the keyboard image into the air to
allow control without a flat surface. Rarely are these devices mentioned in
the media without reference to their visual appeal.

13. Maintenance
Unlike conventional hardware keyboards, virtual laser keyboards have no moving
parts, and the bulk of their functionality requires no actual contact with the
device. Whereas conventional hardware is prone to damage by spills, drops and
other malfunctions, virtual laser keyboards are easy to maintain. Manufacturers
often market these devices as "damage free," and this is an important advantage
in any piece of portable hardware that undergoes extensive use.

14. Disadvantages
IGNITE
Keyboard Feel
The keys on a virtual keyboard are activated with a touch sensor
instead of physically pushing down a key as you would on a physical
keyboard. This can take some getting used to since many people
type based on the feel of the concave keys of the physical keyboard.
Without the feel of the keys, some users find it is easy to
inadvertently touch a wrong key on a virtual keyboard, slowing you
down and possibly even creating inaccurate or confusing documents
if the mistakes are not caught in advance of publishing.

15. Keyboard Speed and Character Support
Your typing speed will likely be negatively impacted on a virtual
keyboard. Using experienced virtual keyboard users in a test,
researchers at Northern Illinois University found that the
average typing speed on the touchscreen was 25 words per
minute, while on a standard desktop and laptop keyboard, it
was 63 words per minute, a dramatic difference in speed and
time spent on the keyboard. Also, the virtual keyboard may not
include all the keys you have become accustomed to on your
physical keyboard, affecting your productivity and increasing
your learning curve.

16. Screen Use
When using the virtual keyboard, the amount of screen space left to view and proofread
your document is minimal, requiring you to scroll up or down to see the document in its
entirety. This constant scrolling and lack of screen space will slow your typing and
possibly affect your train-of-thought. Additionally, because typing on a virtual keyboard
requires frequent contact with the screen, the likelihood of smudges and dirt on the
screen is high. With repetitive use, you'll need to frequently wipe the screen clean to
continue working.
Ergonomics
Depending on the size of the virtual keyboard and device, you may need to look
straight down at the device, leading to neck fatigue and soreness. The placement of
the wrists and fingers will also be different compared to a standard keyboard,
possibly creating discomfort with prolonged use over time. Also, recent studies have
shown that virtual keyboard use can lead to shoulder stiffness or pain due to the way
a user's fingers need to hover above the keys to avoid accidentally activating a key --
keeping the fingers elevated impacts the shoulder muscles.

17. Conclusion
IGNITE
AT LAST VIRTUAL KEYBOARD CAN BE A VERY HELPFUL INVENTION IF IT IS USED PROPERLY
IN THE PROPER SECTOR ELSE IT CAN BE TOTAL WASTE. THERE CAN BE REVOLUTIONARY
CHANGES IN VIRTUAL KEYBOARD THAT CAN CHANGES THINGS AND MAKE THE KEYBOARD
EVEN BETTER. TO SUM UP VIRTUAL KEYBOARD HAS MANY USES AND IS BEING USED IN
DIFFERENT SECTORS .

18. THANK YOU
Wewillhighly appreciateyoursuggestions .
Any queries?