What kind of information stored in bar code?

A barcode is an optical, machine-readable representation of data. The data is usually a series of numbers and letters that can be read by a barcode scanner. Barcodes are used for a variety of purposes, including:

- Product identification: Barcodes are used to identify products in stores and warehouses. The barcode number is typically the product's SKU (stock keeping unit) number.

- Inventory management: Barcodes are used to track the inventory of products. The barcode number can be used to look up the product in a database, which can provide information such as the product's quantity on hand, price, and reorder point.

- Shipping and receiving: Barcodes are used to track the movement of products throughout the supply chain. The barcode number can be used to identify the product, the shipper, and the recipient.

- Point-of-sale (POS) systems: Barcodes are used to scan products at the point of sale. The barcode number can be used to look up the product's price, calculate the total purchase price, and apply any discounts.

- Customer loyalty programs: Barcodes can be used to identify customers for loyalty programs. The barcode number can be linked to the customer's account, which can provide information such as the customer's name, address, and purchase history.

Barcodes can store a variety of information, including:

- Product number

- Price

- Weight

- Expiration date

- Manufacturer

- Country of origin

- Serial number

- Tracking number

The amount of information that can be stored in a barcode depends on the type of barcode. There are several different types of barcodes, each with its own advantages and disadvantages. The most common type of barcode is the Universal Product Code (UPC), which is used on most products sold in stores.