Bio- refers to biological.
Metric - refers to measuring.
Biometric MEASURES something biological. In the case of a computer, it can digitize fingerprints, retinal scan, voice analysis... just about anything that might identify you as being unique from others.
Typically biometric devices are installed as a component of computer security, such as a fingerprint scan, a retina scan or a voice print.
In the case of a fingerprint scan, one would need to press on the pad that detects your fingerprint, and if it doesn't match, the computer will not allow you to have access to the computer.
Biometric authenticator.
a biometric sensor
at an important places
Ignoring the problems that biometric devices often have of false negatives (i.e. the scanner doesn't recognise you because you didn't put your finger on it correctly), one problem with using any biometric device (such as a fingerprint scanner) is that if someone figures out a way to "spoof" (fool) the scanner, there is no way to change your fingerprint. For example, if my credit card is stolen I can cancel it. If my password is stolen, I can change it. If someone has my fingerprints, well, I guess there is nothing I can do to stop them from accessing whaterver system they unlock.
The biometric passport (bpp) is important because it includes biometric data, like fingerprints or facial recognition, which enhances security by making it harder to forge or steal. This technology improves border control processes by quickly verifying a traveler's identity, reducing wait times and increasing efficiency compared to traditional machine-readable passports.
*winks*
Haylo
biometric authentication device digital camera
Althogh there there are better biometric devices, face recognition is an example of biometric device because it has to recognize your face to authenticate you to a facility.
Most biometric devices would be input devices although they may also utilize storage devices and output devices in their functioning. A biometric device usually takes in biometric information about a person and compares it to information stored in a database - much like username/password methods of authentication compare the username and password to the stored information for a user. Fingerprint scanners, read the fingerprint, convert it to a data stream and then compare it to the stored data previously recorded for the individual, retinal scanners read information about the retinal patterns of a user, convert it to data and compare it to stored data, etc. Note that biometric devices must rely on a storage device, but usually the storage device is not part of the biometric device. Instances of OUTPUT associated with a biometric device might be a signal to open a door or trigger an alarm, but again, the output usually comes from another device that the biometric device is connected to.
Broadly, a "biometric device" is any device that measures a biological function or trait. As related to computers, biometric devices are used to control access and/or verify identity. Voice recognition, retinal scanners, palm/fingerprint scanners are all examples of biometric devices. A biometric scanner will take a picture (your fingerprint, your retina) and match it to a previous scan kept on file. Other types of biometric devices, such as voice recognition systems, will record your voice and compare the recording to a sample on file.
Fingerprint ScannerRetina ScannerFace ScannerThese are some of the BIOMETRIC devices that inputs biological physical data.
Yes they are input devices.
finger print
from $69.95 and up
Most biometric devices would be input devices although they may also utilize storage devices and output devices in their functioning. A biometric device usually takes in biometric information about a person and compares it to information stored in a database - much like username/password methods of authentication compare the username and password to the stored information for a user. Fingerprint scanners, read the fingerprint, convert it to a data stream and then compare it to the stored data previously recorded for the individual, retinal scanners read information about the retinal patterns of a user, convert it to data and compare it to stored data, etc. Note that biometric devices must rely on a storage device, but usually the storage device is not part of the biometric device. Instances of OUTPUT associated with a biometric device might be a signal to open a door or trigger an alarm, but again, the output usually comes from another device that the biometric device is connected to.
Iris scanners and fingerprint scanners are alternative (biometric) input devices for computers.