This article is being written in response to the assignment to carry out the complete research on various issues related to Speaker Verification for Research-Lab's upcoming computer security product's campaign.

This article is going to cover the important speaker verification  issues such as services, products, service providers and Research-Lab's approach to Speaker Verification.

Research is focused on the following points

• Speaker Verification Technology...general.
  
• Validating Methodology...how it works?
  
• Voice Print Matching...in short.
  
• Voice Print Matching ...the most accurate verification system. 
  
• Other Verification Technologies.
  • Eye / Retina Scan.
  • Iris Scan.
  • Face / Facial Expression Recognition.
  • Signature.
  • Finger Prints.
  • Thumb Print.
  • Hand Geometry.
    
• Speaker Verification System Providers.
  
• Research-Lab's approach to Speaker Verification.

Speaker Verification Technology...general

Speaker Verification technology is based upon the distinctive characteristics derived from spoken words or phrases. These characteristics are based on the physiology of the vocal track combined with unique behavioral aspects of speaking to enable verification of the identity of  the person who is speaking.
Speaker Verification is completely different from speech verification, a technology which is in use to translate what person says into the information that can be understood by a computer based system.

There are number of verification technologies in the market such as Speaker Verification, voice recognition, speaker verification, speech recognition, voice pattern matching / voice print scanning, finger prints verification, user authentication through facial expressions, eyedentification and so on.

Validating Methodology...how it works?

General idea about how Speaker Verification is takes place through any Speaker Verification software. When user attempts to enter any voice based password system, user is asked to enter user name and voice password, then system validates that entered voice print with the existing voice print from user profile. Once user is authenticated then only he will be awarded the access to the system.

Voice Print matching ...in general

Accuracy of Voice print provides secure, unique and highly impossible to break means of  offering user authentication systems. You must be very eager to know about " What is this new security? and how does it work? " and here let me bring answer to questions...
In technical aspects voice print is a digital representation of person's voice, consisting of genetic as well as environmental characteristics. Here Genetic characteristics include the physical characteristics of  the user's vocal tract such as nasal cavity and Environmental Characteristics it includes the nature of person's speech and how he learned to speak such as dialect, accent, expression, intonation and volume.

Voice Print matching ...the most accurate verification system 

Voice print matching technology gives high-end accuracy, so it is more accurate than Traditional Data Stream passwords, Fingerprints, Face Recognition, Facial Expression or nearly every other type of Biometric Technology. The most important feature of Voice Print is it is the only Biometric that can be used over VoIP or telephone.
Every person has his own and unique voice pattern and no one other can the same voice pattern as you have. Also the voice passwords are very easy to understand and remember than text based passwords because humans learned to speak first than to write or analyzing things by textual representation. 

Other Verification Technologies.

• Eye / Retina Scan
  The person can be identified by a retina scanning which  provides an analysis of the capillary blood vessels located in the back of the eye. This pattern never changes throughout the life. In this scan a low-intensity light to take an image of the pattern formed by the blood vessels. (For these types of verification systems special scanners are available.)
  
• Iris Scan.
  Iris scanning is performed on analysis of the rings, furrows and freckles in the colored ring that surrounds the pupil of the eye, in this scanning more than 200 points are used for comparison.
  
• Face / Facial Expression Recognition 
  Facial characteristics are used to perform facial recognition. This can be an example of biologon systems.
  
• Signature
  It provides a basic means of  identification though it can be changed over time.
  
• Finger Print / Thumb Print Identification
  In this verification system fingerprints are used to identify the person because fingerprints never change through out the life, though person ages the fingerprints also do get larger in the same proportion.
  
• Hand Geometry
  Measurements and comparisons of hand are considered in this system as a characteristics to identify any person. Here hand geometry plays a roll of Biokey.

Speaker Verification System Providers.

As a part of research I have also number of Speaker verification systems and their providers, some of them are mentioned below

• Visionics.
• Opscan 
• Biologon
• Identix
• Scantron
• Scanmark
• Icslp
• miros

Research topics are as follows

Speaker Verification software
Speaker Verification
speech verification
voice recognition
voiceprint
identification
enter
voice
authentication
face
faceit
ディ リングprint
biometric
fingerprint
リン ガムdeep space nine
aa アートtrueface
facial recognition
speaker verification
visionics
verification
biometrics
recognition
ッドretina
モビーtimit
speech recognition
グレイプviisage
omr
retinal
u are u
opscan
biologon
identix
scantron
scanmark
phoneme
トッドfingerscan
icslp
eurospeech
digital persona
miros
elra
biometrie
access control
secugen
precise biometrics
handkey
prosodic
htk
touchchip
bioscrypt
digitalpersona
iriscan
veridicom
iridian
thumbprint
utterance
afis
authentec
mark sense
biotouch
hmm
dillingham
mt digit
biomouse
veriprint
defcon authenticator
acroprint
dfr 200
timeclock
bioapi
finger print
irisscan
fingerabdruck
iafis
identicator
eyedentify
uareu
symtron
recognizer
attendance
bioid
iguard
biometri
facevacs
icassp
biometry
saflink
lathem
fingerabdruckscanner
biometrix
timekeeping
irisscanner
vingerafdruk
scan
cognitec
irisaccess
keyware
gezichtsherkenning
morphoaccess
verifinger
fps110
timekeeper
ikendi
scanning
authenticam
securesuite
handpunch
veripass
dermalog
ethentica
fingerlan
biometria
etrue
robust
fingerchip
biometric access corporation
fingerscanner
biolink
fingeraftryk
penflow
daugman
timecard
vector quantization
prosody
bionetrix
scantools
hunno
id3d
fingerprints
eyeticket
mv1200
printrak
gmm
biometrical
national computer systems
touchprint
inkless
biometrica
veriprox
morphotouch
door
bm et100us
veritouch
crossmatch
biokey
ctst
biometrik
neurotechnologija
speech
isip
delsy
tsutomu matsumoto
securetouch
viisage technology
livescan
biometics
fingerloc
speaker
magicsecure
biomatrix
adaptation
asr
scanners
ncs
voicevault
fvc2002
visionsphere
wsq
gesichtserkennung
identics
biometr
spracherkennung
cardtech securtech
ankari
5th sense
xyloc
scanner
visage
bio touch
fingeravtryck
evva
zn vision
parlis
sagem morpho
darpa
biopay
huella digital
indivos
qvoice
cross match technologies
thumb print
elda
datastrip