A fingerprint verifying apparatus includes first and second light emitting
devices, an imaging unit, a fingerprint verifying circuit and a drive
switch. The first light emitting device emits first light of a first
color, and the second light emitting device emits second light of a
second color. The imaging unit detects an image of a fingerprint of a
finger from the first light reflected by a finger. The fingerprint
verifying circuit has registered fingerprint images, and compares the
detected fingerprint image and each of the registered fingerprint images
to determine whether the detected fingerprint image is coincident with
any of the registered fingerprint images, and outputs a match signal when
the detected fingerprint image is coincident with any of the registered
fingerprint images. The drive switch turns on the second light emitting
device in response to the match signal.