For supermarkets, there are thousands of customers coming in and out every day. Each customer often buys many products so the payment process is very time consuming.
For bookstore management, managers often face many problems such as large and detailed books and stationery; not managing all staff systems, prices, product bills, etc.
To facilitate and improve efficiency in product sales and management, manufacturers often print on goods a special type of code called a bar code.
The application of barcodes for products helps inventory work to be done easily, quickly and scientifically.
The increasing number of books in the library leads to the situation of managing books, renting books every day, increasing the difficulty if the traditional management methods are maintained.