Barcode - How they work and their purpose

If black absorbs light, then what does white do?

• Reflects it

• Break it

• Changes it

• Sees it

What is a limit of UPC barcodes?

• They are not globally standardized.

• UPC barcodes are designed for easy scanning in retail environments

• UPC-A barcodes can only store 20 alphanumeric symbols

• many smartphone apps can read them

What is a UPC barcode?

• A UPC is a type of 2D barcode that uses shapes and dots.

  
  

• A UPC is a type of 1D barcode that has 12 numbers to tell about a product.

  
  

• A UPC is a type of barcode that is only used for books.

  
  

• A UPC is a type of barcode that can hold website links and phone numbers.

  
  

According to the video, what can a QR code hold?

• Secret messages only the store owner can read.

  
  

• The names of all the store's employees.

  
  

• Recipes for the store's food.

  
  

• Website links, phone numbers, or short notes.

  
  

What happens when a scanner shines light on a barcode?

• The light disappears.

  
  

• The light turns into a rainbow.

  
  

• The light bounces back differently from the black lines and white spaces.

  
  

• The light makes the barcode disappear.

  
  

Why do companies work with organizations like GS1?

• To get a unique number for each of their products.

  
  

• To learn how to build better stores.

  
  

• To find out how to advertise their products.

  
  

• To get help with hiring employees.

  
  

What is starting to help scanners identify products even if the barcode is damaged?

• Stronger lights on the scanners.

  
  

• New types of paper for the barcodes.

  
  

• Image recognition.

  
  

• Louder beeping sounds.

  
  

The video talks about 1D and 2D barcodes. Which one can hold more information?

• 1D barcodes.

  
  

• 2D barcodes.

  
  

• They hold the same amount.

  
  

• Neither can hold information.

  
  

What is the primary function of a barcode as described in the passage?

• To decorate products

• To help stores keep track of products

• To confuse customers

• To increase product prices

How does a barcode scanner interpret the information from a barcode?

• By reading the color of the lines

• By measuring the length of the barcode

• By analyzing the pattern of reflected light

• By counting the number of lines