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What are the disadvantages of optical scanners?

(Отметьте один правильный вариант ответа.)

Варианты ответа

Optical scanners are difficult to operate

Optical scanners can't always distinguish between a picture of a finger and the finger itself(Верный ответ)

Optical scanners don't use electrical current

Optical scanners are an exotic technology

Похожие вопросы

Like optical scanners, capacitive fingerprint scanners generate an image of the ridges and valleys that make up a fingerprint.

How do capacitive fingerprint scanners differ from the optical ones?

What type of sensor is used in optical fingerprint scanners?

The light sensor system used in optical scanners is the same as in digital cameras and camcorders.

What are the disadvantages of word processors?

Верно ли следующее утверждение:

Word processors do not have any disadvantages.

A CCD camera is usually used in capacitance fingerprint scanners.

There is no way to make fingerprint scanners more reliable than they are now.

What is in the heart of an optical scanner?

Capacitive scanners can sometimes be fooled by a mold of a person's finger.