Digital scent technology allows for the digital representation and transmission of smells. It works by using electronic noses and olfactometers to detect smell molecules, which are then indexed and digitized into small files that can be attached to online content. At the receiving end, a scent synthesizer reproduces the smells that are directed to the user's nose. This technology could be used to add scents to movies, games, virtual reality experiences and online shopping. However, it faces challenges in accurately reproducing smells and in the high costs of scent synthesizing hardware. Future applications could include scented video calls, emails and social media.

1. DIGITAL SCENT
TECHNOLOGY
H.SAIKIRAN
ECE
JOGINPALLY BR ENGINEERING COLLEGE

2. CONTENTS
 Introduction
 Evolution of Digital Smell
 Principles followed
 Block Diagram of Digital Smell Communication
 Broadcasting of Smell
 Hardware Devices
 Applications
 Effects of Digital Smell for different sites
 Advantages and Disadvantages
 Future Scope
 Conclusion
 References

3. INTRODUCTION
AIM:
 Until now, online communication involves only three
senses they are, sense of touch ,sense of hearing and sense
of sight.
 Fourth one is in its developing stage that is ,sense of
smell.
 Digital scent technology (or olfactory technology) is the
engineering discipline dealing with olfactory representation.
 Digital scent technology is the main application of e-nose.
With digital scent technology, it is possible to sense, transmit
& receive smell through internet.
 This sensing part of this technology works
using olfactometers and electronic noses.

4. PREVIOUS SYSTEM:
 Until now, online communication involved only two
of our senses
1.sense of sight
2.sense of hearing.
PROPOSED SYSTEM :
 A new technology targets on sense of smell.

5. EVOLUTION OF DIGITAL SMELL
 How it was Invented : For the user to feel more realistic
effects of movies the very new facility of digital smell in movies
or in games have been introduced. The basic idea for this was
given by the perfume making companies for the advertisements
of their perfumes.
 Founders : “Dexster Smith and Joel Lloyd Bellenson”,
experts in bioinformatics and genomics, started from the
following idea: “If we can find the essence of a biological
smell and build a profile, we can digitalize and broadcast it

6. PRINCIPLES FOLLOWED
Basic Principle of e-Nose:
 Fundamental principle of artificial nose is that
each sensor in the array has different sensitivity.
The pattern of response across the sensors is
distinct for different odors.
Different e-noses use different types of gas
sensors which form heart of enose.

7. Sensing an ordant:
 The sensor’s response is recorded and delivered to the
signal processing unit and then it is converted into
electronic signal by using a transducer and is
processed by using the signal processing unit

8. DIGITAL SCENT COMMUNICATION

9. DIGITAL SCENT COMMUNICATION
 The e-nose detects the smell molecules and it is indexed
based on two parameters.
 The scent is indexed according to its chemical makeup and its
place in the scent spectrum.
 The chemical makeup can be detected by the electronic nose .
 The indexed scent is digitized into a small file by olfactory
signal processing. This file is sent as an attachment to the
recipient’s computer.
 At the receiving end, there will be a personal scent synthesizer
and air cannon. The personal scent synthesizer reproduces the
smell and the air cannon direct the smell to user’s nose.

10. At the receiving end, there will be a personal scent
synthesizer and air cannon.
The personal scent synthesizer reproduces the smell
and the air cannon direct the smell to user’s nose.

11. BROADCASTING OF SMELL
It is carried out at the following 3 levels
1.Digitized Scent :A scent is indexed along two parameters, its
chemical makeup and its place in the scent ”spectrum” and then
digitized into a small file.
2.Broadcast: The digital file is scent, attached to enhanced web
content.
3.Smell Synthesizer: The smell synthesizer means the device
which is used to generate the smells.

12. HARDWARE DEVICES
 Smell Synthesizer
 iSmell
 Catridge

13. SMELL SYNTHESIZER
 Smell synthesizer is the device ,which is used to generate the
smells. iSmell is a device used to produce the gas using
computer.
 There are various types of smell synthesizers available in the
market, but for computer the smell synthesizer is made by
digiscents industry

14. iSmell
 The iSmell is a peripheral device,
about the size of a PC speaker that connects to a PC via a serial
or USB port.
 It uses consumable cartridges
which are used and replaced
similar to the way ink jet printers
use ink cartridges.
 The iSmell
device reads a digital scent
file, creates a smell from a
"palette'' .

15. CATRIDGE
 The cartridge will contain chemicals in the form of either
natural oils or synthetic fragrances that will be activated by
either heat or air
pressure, when you send signal from your computer.
 Currently 128 chemicals are
stored in a cartridge.
 Similar to an ink jet printer.

16. Applications
There are many applications for digital scent technology such as:
 Send scented email
 Watch scented DVD's
 Sample a perfume from a beauty product's website
 Smell the assortment of freshly brewed coffees for sale in
their online store.
 Education : Teaching tool in Geography, History and
Sciences.
 Entertainment: Scent will make music, movies and
interactive games life like and immersive

17. Effects of Digital Smell for Different
Sites
Over the Theatre:
 After few years virtual theatres will enter in to the market. This
virtual theatre is basically the concept of the virtual reality.
 For example, if we are watching movie in a virtual theatre ,there
we see burning of a tier then we can feel the smell by using this
technology.
Over the Television:
 After some time over television
will came with more picture quality,
better voice as well as iSmell device,
which will create more interest in
watching the television.

18. Over the Internet
 DigiScents technology will be used to add a new dimension to
e-commerce and entertainment technology adding scent to
movies, online advertising and interactive games are just a few
of the possibilities.
E-mail Alive with smell:
 Of all the uses for scentware, this one scares be most the
ability to send emails with smells anybody can design.
 Sure, it’ll add a fun new
dimension to birthday when you
can send an electronic postcard
with nice music and a dozen roses
that smell real,etc.

19. Advantages
 It can be used without fall over hours, days, weeks
and even months and can even circumvent problems
associated with the use of human panels such as
individual variability.
 e-nose is a compact device and so it is portable and
reliability is very high.
 It can identify simple molecules which cannot be
accomplished by human nose.

20. Disadvantages
 Cost of an e-nose ranges from $5000 to $100,000,which is
very high.
 Another disadvantage has been the delay between successive
tests

21. Conclusion
 A Scent has a strange power over human beings.
 “The Sense of smell is closely tied to memory and emotion,
making scent a powerful way to reinforce ideas”. Hence we
conclude that this digital smell will revolutionized the world.
And at every place we will require this device, such as for
scented mail, scented Movies, scented songs we will require
this device.
 This device will become our need in future.

22. FUTURE SCOPE
Under their system a person could send an 'encoded'
message from one computer to another, and then
person will get the message in the form of smell.
Then this smell will be cached by the input ismell
device then given to the translator which will
translate these release chemicals to the message
form.

23. References
 www.google.com
 www.wikipedia.org
 www.digiscents.com
 www.scentware.com
 www.primagames.com