A virtual keyboard projects a full-sized keyboard onto any flat surface using laser and sensor technology, allowing users to type on invisible keys. It has advantages like portability and flexibility to type anywhere, as well as being quieter than physical keyboards, but disadvantages include a lack of tactile feedback and difficulty becoming accustomed to typing without physical keys. Potential applications include use in hospitals, gaming, and on devices like ATMs for added security.

1. LASER PROJECTION VIRTUALLASER PROJECTION VIRTUAL
KEYBOARDKEYBOARD

3. CONTENTCONTENT
INTRODUCTIONINTRODUCTION
NEED OF VIRTUAL KEYBOARDNEED OF VIRTUAL KEYBOARD
TECHNOLOGYTECHNOLOGY
HOW DOES IT WORKSHOW DOES IT WORKS
FEATURESFEATURES
USESUSES
ADVANTAGESADVANTAGES
DISADVANTAGESDISADVANTAGES
FUTURE SCOPE & IMPLEMENTATIONSFUTURE SCOPE & IMPLEMENTATIONS
CONCLUSIONCONCLUSION
REFERENCESREFERENCES

4. ABSTRACTABSTRACT
Computing is now not limited to desktops and laptops, itComputing is now not limited to desktops and laptops, it
has found its way into mobile devices like palm tops andhas found its way into mobile devices like palm tops and
even cell phones. But what has not changed for the lasteven cell phones. But what has not changed for the last
50 or so odd years is the input device, the good old50 or so odd years is the input device, the good old
QWERTY keyboard. Virtual Keyboard uses sensorQWERTY keyboard. Virtual Keyboard uses sensor
technology and artificial intelligence to let users work ontechnology and artificial intelligence to let users work on
any surface as if it were a keyboard. Virtual Devicesany surface as if it were a keyboard. Virtual Devices
have developed ahave developed a flashlight-size gadgetflashlight-size gadget that projects anthat projects an
image of a keyboard on any surface and let’s peopleimage of a keyboard on any surface and let’s people
input data by typing on the image. The Virtual Keyboardinput data by typing on the image. The Virtual Keyboard
uses light to project a full-sized computer keyboard ontouses light to project a full-sized computer keyboard onto
almost any surface, and disappears when not in use.almost any surface, and disappears when not in use.

5. INTRODUCTIONINTRODUCTION
 Virtual Keyboard is just another example of today’sVirtual Keyboard is just another example of today’s
computer trend of ‘smaller and faster’.computer trend of ‘smaller and faster’.
 A Virtual (projection) keyboard is a full-size virtualA Virtual (projection) keyboard is a full-size virtual
keyboard projected and touched on any surface.keyboard projected and touched on any surface.
 The keyboard watches your fingers move and translatesThe keyboard watches your fingers move and translates
that action into keystrokes in the device.that action into keystrokes in the device.
 The virtual keyboard technology uses sensor technologyThe virtual keyboard technology uses sensor technology
and artificial intelligence to let users work on any flatand artificial intelligence to let users work on any flat
surface as if it were a keyboard.surface as if it were a keyboard.

6. NEED OF VIRTUAL KEYBOARDNEED OF VIRTUAL KEYBOARD
 The Virtual Keyboard uses the infrared & laser technology to projectThe Virtual Keyboard uses the infrared & laser technology to project
a full-size keyboard onto any flat surface. So you can use it almosta full-size keyboard onto any flat surface. So you can use it almost
anywhere.anywhere.
 A virtual keyboard prevents your username or password from beingA virtual keyboard prevents your username or password from being
stolen, especially while usingstolen, especially while using public computerspublic computers, such as those, such as those
available inavailable in Internet cafesInternet cafes. As the sequence in which the keys. As the sequence in which the keys
appear will change every time the page is refreshed. So they areappear will change every time the page is refreshed. So they are
useful from security point of view in Banks, ATM’s.useful from security point of view in Banks, ATM’s.
 The Virtual Keyboard is not restricted to the ‘QWERTY’ touch-typingThe Virtual Keyboard is not restricted to the ‘QWERTY’ touch-typing
paradigm ; adjustments can be done to the software to fit otherparadigm ; adjustments can be done to the software to fit other
touch-typing paradigms as well, suchtouch-typing paradigms as well, such as the ‘DVORAK’ keyboard.as the ‘DVORAK’ keyboard.

7. TECHNOLOGYTECHNOLOGY
This system comprises of three modules:This system comprises of three modules:
1.1. The pattern projector (projection module)The pattern projector (projection module)
2.2. IR-light source (micro-illuminationIR-light source (micro-illumination
module)module)
3.3. The sensor moduleThe sensor module

8. Projection moduleProjection module
The Projection module printed image presents theThe Projection module printed image presents the
image of the keyboard of the system. This imageimage of the keyboard of the system. This image
can be projected on any flat surface. Thecan be projected on any flat surface. The
projected image is that of a standard QWERTYprojected image is that of a standard QWERTY
keyboard, with all the keys and control functionskeyboard, with all the keys and control functions
as in the keyboard.as in the keyboard.
This image is produced by illuminating aThis image is produced by illuminating a
speciallyspecially
designed highly efficientdesigned highly efficient
optical element with a redoptical element with a red
diode laser.diode laser.

9. MICRO-ILLUMINATION MODULEMICRO-ILLUMINATION MODULE
The Infrared Light Source emits a beam ofThe Infrared Light Source emits a beam of
infrared light . This light beam is designed toinfrared light . This light beam is designed to
overlap the areaoverlap the area on which the keyboard patternon which the keyboard pattern
or printed image resides. This helps inor printed image resides. This helps in
recognizing the hand movements and therecognizing the hand movements and the
pressing of keys .pressing of keys .

10. Sensor moduleSensor module
The Sensor Module serves as the eyes of thisThe Sensor Module serves as the eyes of this
Keyboard technology . The Sensor ModuleKeyboard technology . The Sensor Module
operates by locating the user's fingers in 3-Doperates by locating the user's fingers in 3-D
space and tracking the intended keystrokes, orspace and tracking the intended keystrokes, or
mouse movements. Reflected light from usermouse movements. Reflected light from user
interactions with the interface surface is passedinteractions with the interface surface is passed
through an infra-red filter andthrough an infra-red filter and
imaged onto a CMOS imageimaged onto a CMOS image
sensor in the sensor module.sensor in the sensor module.

11. WORKINGWORKING
There are actually two projections onto the flatThere are actually two projections onto the flat
surface in front of the projector. The projectionsurface in front of the projector. The projection
you can see is the red holographic laseryou can see is the red holographic laser
projection. A few millimeters above the redprojection. A few millimeters above the red
projection is an invisible infrared (IR) projection.projection is an invisible infrared (IR) projection.
When you press a key, theWhen you press a key, the IR projection aboveIR projection above
the key is bounced back into the projectorthe key is bounced back into the projector thatthat
interprets from the angle which key was actuallyinterprets from the angle which key was actually
pressed.The standard projector connects to apressed.The standard projector connects to a
computer either by Bluetooth or through acomputer either by Bluetooth or through a
standard USB connector.standard USB connector.

13. FEATURESFEATURES
Can do work in darkness.Can do work in darkness.
Wireless.Wireless.
Compact size keyboard.Compact size keyboard.
Rechargeable battery.Rechargeable battery.
Allow the convenience full-size typing inAllow the convenience full-size typing in
tiny factor.tiny factor.

14. USES OF VIRTUAL KEYBOARDUSES OF VIRTUAL KEYBOARD
 To make notes during smart classes, business
meeting and in library as no one will hear your
keying sound.
 For those people who travel a lot , it is useful to
carry being small in size and lighter in weight , even
you can put it in your shirt’s pocket.
 It is useful in hospitals where low noise is essential.
 It can be use in gaming control and TV remote
control.

15. ADVANTAGESADVANTAGES
 Portability, Accuracy , Flexibility.Portability, Accuracy , Flexibility.
 Speed of text entry.Speed of text entry.
 Noise less than conventional keyboards.Noise less than conventional keyboards.
 The typing does not require a lot of force. SoThe typing does not require a lot of force. So
easing the strain on wrists and digits.easing the strain on wrists and digits.
 They are also made to be water proof andThey are also made to be water proof and
hence less prone to damage when spills occur.hence less prone to damage when spills occur.
 Maintenance of the laser keyboards is muchMaintenance of the laser keyboards is much
easier.easier.

16. DISADVANTAGESDISADVANTAGES
Tactile feel is not possible.Tactile feel is not possible.
Dirty screens.Dirty screens.
Virtual keyboards is hard to get used to. since it involvesVirtual keyboards is hard to get used to. since it involves
typing in thin air, hence it requires a little practice. Onlytyping in thin air, hence it requires a little practice. Only
people who are good at typing can use it efficiently.people who are good at typing can use it efficiently.
It is very costly ranging from 150-200 dollars.It is very costly ranging from 150-200 dollars.
The room in which virtual keyboard is used should not beThe room in which virtual keyboard is used should not be
very bright so that the keyboard is properly visible.very bright so that the keyboard is properly visible.

17. FUTURE SCOPE &FUTURE SCOPE &
IMPLEMENTATIONSIMPLEMENTATIONS
Laser keyboards can be embedded intoLaser keyboards can be embedded into
ATM’s.ATM’s.
Laser keyboards can be used into spaceLaser keyboards can be used into space
crafts as they are very lighter and smaller.crafts as they are very lighter and smaller.
It can be embedded into digital lockersIt can be embedded into digital lockers
into banks, hostels for entering passwordsinto banks, hostels for entering passwords
and digital door lockers based onand digital door lockers based on
passwords.passwords.

18. CONCLUSIONCONCLUSION
Virtual Keyboard uses sensor technology and artificialVirtual Keyboard uses sensor technology and artificial
intelligence to let users work on any surface as if it wereintelligence to let users work on any surface as if it were
a keyboard. Projection key boards or virtual key boardsa keyboard. Projection key boards or virtual key boards
claim to provide the convenience ofclaim to provide the convenience of compactnesscompactness withwith
the advantages of a full-blown QWERTY keyboard.the advantages of a full-blown QWERTY keyboard.
Virtual Keyboard is designed for anyone who's becomeVirtual Keyboard is designed for anyone who's become
frustrated with trying to put information into a handheldfrustrated with trying to put information into a handheld
but doesn't want to carry a notebook computer around.but doesn't want to carry a notebook computer around.
Thus virtual keyboards will make typing easier,Thus virtual keyboards will make typing easier,
faster, and almost a pleasure.faster, and almost a pleasure.

19. REFERENCESREFERENCES
 http://www.innovationworks.org/html/portfolio/virhttp://www.innovationworks.org/html/portfolio/vir
 http://www.technologyreview.com/articles/wo_fitzhttp://www.technologyreview.com/articles/wo_fitz
 http://www.canesta.comhttp://www.canesta.com
 www.smarttech.comwww.smarttech.com
 http://www.virtual-laserkeyboard.com/demo.asphttp://www.virtual-laserkeyboard.com/demo.asp
 www.laser-keyboard.comwww.laser-keyboard.com