Fingerprints, DNA, and the retina and iris of the eye are other examples of biometrics.
For now, many of the biometrics databases in the United States are still separated.
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Be it voice, iris or fingerprint, though, biometrics raise privacy concerns among some users.
And in some cases biometrics can enhance both security and convenience, says Mr Harris.
L-1 has built a portfolio of biometrics companies via acquisition and is still on the prowl.
Biometrics backers say this kind of technology is the key to increasing airport security.
Steinhardt believes biometrics is advancing faster than the legal issues it raises can be addressed.
Biometrics is quickly becoming the weapon of choice against welfare fraud in eight states, including California.
Biometrics might even enable patients to find out who had looked at their records, and when.
Face recognition technology is just one example of "biometrics, " the process of identifying people through physical characteristics.
And some, like Accurate Biometrics, monitor computer use of employees, both at home and in the office.
It's just one example of what's called biometrics, the process of identifying people by unique physical characteristics.
The UID has been mandated to carry out de-duplication of the biometrics and issue the UID numbers.
Fears of Big Brother aside, the use of biometrics in air travel faces other more pressing logistical problems.
The banks have also been experimenting with more sophisticated forms of user authentication, including fingerprinting, iris-scans and biometrics.
The speculation becomes exciting around the concept of Biometrics embedded in the iWatch.
The idea behind this system is to make biometrics recognition easier and mobile.
CNN: How to turn your phone into a biometric scanning machine
He did posit that some form of biological monitoring would be built into a potential Valve game controller (biometrics).
Systems based on voice biometrics look more user-friendly: people already use telephones, and can do so on the move.
However, in the long term, biometrics, by their very nature, will compromise privacy in a deep and thorough fashion.
PITTSBURGH-Identity science takes a giant leap forward with a new discipline in biometrics.
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More credibly, other opponents object on the grounds that biometrics sound horribly Big-Brotherish.
Some, including Pat Robertson, a television evangelist, object to biometrics on religious grounds.
IBIA, biometrics can be used in ways that enhance rather than diminish privacy.
"The best increase in accuracy will come from fusing different biometrics together, " said Bojan Cukic, the co-director of the center.
Peters homes in on three areas: biometrics, scanning and protection (meaning armor and the like for cops and terror targets).
His big score was Biometrics Imagineering, a firm he started in 1998 that developed document processing machines for bank tellers.
Spurred by the misplaced enthusiasm of governments around the world, biometrics seem headed for dramatic growth in the next few years.
The space--protected with fingerprint biometrics and jammed with cables, server stacks and air-conditioning equipment--also serves as a nice showpiece for prospective clients.
Worse, some biometrics may not be as secure as they seem anyway.
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