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Barcodes are read with barcode scanners, which use light sensors to detect the patterns of black and white bars in the barcode. The scanner translates these patterns into a digital code that is used to look up information in a database.

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1y ago

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Related Questions

Can you read a barcode?

Barcodes are read by optical devices.


How do you read barcodes?

With a barcode scanner.


What is meant by digital data?

data that can read barcodes


Describe what is meant by digital data?

data that can read barcodes


Level 29 Tim tang?

http://www.wikihow.com/Read-12-Digit-UPC-Barcodes


What is the difference between the 1d linear barcode and 2d barcode?

1D has vertical bars that are read horizontally, 2D has small squares that are read simultaneously both horizontally and vertically. 2D barcodes can store much more information than 1D barcodes can.


How the computer system checks that the bar code has been read correctly?

it calculates the checkdigit based on the number read. if the check digit calculated matches with the one read then barcodes has been read correctly.


Where was the bar code on the suits in gemany's concentration camps?

they did not need one, as the devices to read the barcodes had not been invented yet.


In a barcode the dark lines are 1sand the white ones are 0s.?

No, the widths of both the black lines and white lines represent a different combination of numbers that the company was assigned and added based on the type of product. See Method 2 for details on how to read barcodes: wikihow(.)com/Read-12-Digit-UPC-Barcodes


What restrictions does a scanner have?

Scanners cannot hold too many codes in it. Scanners cannot read barcodes which are torn off or damaged.


Why was bar coding used in space?

there are no barcodes in space only earth has barcodes


Can people learn how to read bar codes?

Yes, years ago I broke both the UPC and Postal barcode systems with no prior knowledge of their encoding systems and for a while after breaking them could read them visually (however I'm out of practice now and would have to refresh myself on both). The 2D codes are much more difficult to read, but in principle a person could read them too.