Question

define barcode reader and figure print reader
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Answer 1

Answer:

A barcode reader (or barcode scanner) is an optical scanner that can read printed barcodes, decode the data contained in the barcode and send the data to a computer. Like a flatbed scanner, it consists of a light source, a lens and a light sensor translating for optical impulses into electrical signals.

Explanation:

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Answer 2

Answer:

A barcode reader (orbarcode scanner) is an optical scannerthat can read printed barcodes, decode the data contained in the barcode and send the data to a computer. Like a flatbed scanner, it consists of a light source, a lens and a lightsensor translating for optical impulses into electrical signals.

Fingerprint scanners are security systems of biometrics. They are now used in police stations, security industries and most recently, on smartphones. Everyone has marks on their fingers. They can not be removed or changed. These marks have a pattern and this pattern is called the fingerprint. 

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