Yes they are input devices.
biometric authentication device digital camera
Keyboard, Bar-code Reader, biometric authentication device
biometric
biometric
I can't but according to me it can be a digital camera.
Input.
A digital camera does not put Any "Device" into a computer. A digital camera acts as a storage device and an output device, it transfers jpeg and other similar files to computers as well as mp4 and other movie files.
yes it can be
Biometric authenticator.
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.
A digital camera is an input device because it captures information and stores it on the device via the memory card(which is a storage device).
An input device