Today there is no way to do without barcodes. These are special lines that contain certain information. Detect such information with special equipment - a scanner. There are many retail facilities equipped with them. With the help of barcodes you can find necessary information much faster. When you manually enter the information it takes too long. It is also possible to make mistakes.
Working principle
First take the required item. Scanning takes a few seconds.

You will see on the scanner screen:
- Product name;
- Price;
- Possible discount offers.

All of the above is processed. Then the information is transmitted to the cash register or terminal.
Views of barcode scanners
1. By the method of operation:
- The manual barcode scanner is the most popular device of all other types. Connects via USB. The scanner is easy to operate and small enough to be quickly and easily handled. Virtually all handheld bar scanners have an extra stand. Manual scanners are mostly used by small stores and companies dealing with large parcels. Very often the manual scanners are used by logistics companies for scanning parcels and various retail outlets.
Stationary - is a stationary mechanism. You need to hold it against the goods in order to operate it. The productivity of this variety is large. All due to the fact that it works very quickly. It is used in large supermarkets https://teklynx.com
- Built-in bar code scanner is used in the cashier's shops. Scanning does not require wires. It is sturdy, immovable, reliable, good working ability.
2. Based on the scanning method
- LED - reads the index by the red beam Data is read when it hits the light beam, then sent to the terminal The only negative of this scanner is that the code will not be read if more than 10cm away from the scanner itself. The LED scanner can read only one-dimensional numbers because it was created a long time ago The LED scanner reads only one-dimensional codes, since it was created a long time ago.

The advantages of LED bar scanners:
a) beneficial price;
b) durable for a long time;
c) suitable for the smallest barcode sizes.

- Laser - the essence of work is the same. But the beam is illuminated by laser. The model is more modern, so it's improved.
Benefits:
a) can read even damaged small barcodes;
b) scans any code format;
c) large distance of use;
d) high speed;
e) can work on an inclined plane;
f) mounts on stand

Disadvantages of the barcode scanner:
1) Not resistant to shock and vibration;
2) Doesn't scan shimmering objects with glitter;
3) Prices high.

3. Photoscanners barcodes are the latest developments. The device works by reading the data from the picture. The action is very fast for a few seconds. It interacts with all types of data encoding. Reads data from a distance instead of close range. You can also read codes from various gadgets even in a tilted position. The design is sturdy, shockproof. The only negative factors of this device can be distinguished by its high price.
4. Based on the authorization method
- Wireless - through different kinds of cords;
- Wireless - another name for radio scanner. Connection is via Internet, Wi-Fi, Bluetooth

5. Based on barcode type
- Linear - single-beam scanner Linear - has only one beam It is used in small shops
- Two-dimensional - equipped with many infrared beams.

Selecting a certain barcode scanner depends a lot on the purpose for which it will be used. If we consider a supermarket that sells cigarettes and alcoholic beverages, in this case it is better to use the photo scanner. Shops with high sales turnover and customers should not save on such equipment. A quality device in the future will facilitate and accelerate the work of staff.