This document discusses virtual keyboards as an alternative to physical keyboards. It describes how virtual keyboards work using sensor technology and AI to track finger movements and recognize typed characters without physical keys. The document outlines several types of virtual keyboards, including those that project keyboards onto surfaces using lasers, sense finger movements on hand pads, and detect keystrokes in thin air using gloves. Advantages are noted as portability, no drivers needed, accuracy, flexibility, and silence. Disadvantages include difficulty using on dirty surfaces, challenges for non-proficient typists, high costs, and sensitivity to bright room lighting.

1. Keyboard
Without Keys
And Board
Presented By:-
K.K.C.D Premalal
Faculty Of Technology
University Of Ruhuna
TG523

2. CONTENTS
 VIRTUAL KEYBOARD TECHNOLOGY
 USES
 TYPES OF VIRTUAL KEYBOARDS
 ADVANTAGES
 DISADADVANTAGES

3. What is the Keyboard without keys And Board…
 This System Comprises of three modules:
 1.The sensor Module
 2.IR-light Source
 3.The Pattern Projector
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A virtual keyboard actually is a key-in device. The new virtual keyboard
technology uses sensor technology and artificial intelligence to let users
work on any surface as if it were a keyboard. In a virtual keyboard
camera tracks the finger movements of the typist to get the correct
keystroke. The software and hardware part recognizes the typed
characters and pass it to the computer.

4. OCCASIONS OF USE
⬡ 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.
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5. Types Of Virtual Keyboards
⬡ VKB PROJECTION
⬡ V TYPE
⬡ SENSE BOARD
⬡ SCURRY
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6. VKB PROJECTION
Projects laser image of a
keyboard on any flat surface.
Infrared cameras detect key
strokes. Surface impact of
fingers serves as typing
feedback.
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7. SENSE BOARD
Consist of two rubber pads
that slip onto users hand.
Muscle movements in the
palm are sensed. Translate
movements into key
strokes by pattern
recognition methods.
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8. SCURRY
Operates computer by moving
two hands in empty air.
Next-generation glove-like,
wearable device. It allows
user to punch in letters
without a keyboard, scroll up
and down and control a
cursor.
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9. V TYPE
Detects key strokes in air with
a data glove. Active finger
tracking method is used
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10. ⬡ The Virtual Keyboard uses the infrared And laser technology to project a full-
size keyboard onto any flat surface. So we can use it almost anywhere.
⬡ Portability
⬡ No driver software necessary
⬡ accuracy
⬡ Flexibility
⬡ Speed of text entry
⬡ Noise less than conventional keyboards
⬡ Maintenance of the laser keyboards is much easier
ADVANTAGES
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11. ⬡ Dirty screens
⬡ Virtual keyboards is hard to get used to Only people who
are good at typing can use it efficiently.
⬡ It is very costly.
⬡ The room in which virtual keyboard is used should not be
very bright so that the keyboard is properly visible.
DISADVANTAGES
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Thanks!
Any questions?