• About WordPress
    • WordPress.org
    • Documentation
    • Learn WordPress
    • Support
    • Feedback
Skip to content
May 26, 2026
  • Linkedin
  • Twitter
  • Facebook
  • Youtube

Daily CyberSecurity

Zero-hour alerts. Unmatched analysis.

Primary Menu
  • Home
  • CVE Watchtower
  • Cyber Criminals
  • Data Leak
  • Linux
  • Malware
  • Vulnerability
  • Submit Press Release
  • Vulnerability Report
Light/Dark Button
  • Home
  • Technique
  • POS Systems — How They are Designed and What They Can Do
  • Technique

POS Systems — How They are Designed and What They Can Do

Ddos October 9, 2021 7 minutes read
tech-POS

Stores with many items and high throughput are difficult to do only with online cash registers and terminals. POS systems can help — they are a complete solution for automating sales. Here you would find what it is, what functions it performs, and how much it costs.

What is a POS System

It is a set of equipment united by common custom POS software. It constitutes a full-fledged cash area. The task of the POS terminal is to accept payments made by bank cards. The system can do more:

  1. Generate sales reports — analyze the performance of salespeople, seasonality of sales, search for the most popular goods, etc. There are ready-made report templates, but you can set up any you like.
  2. Control inventory balances — the POS software keeps up-to-date information about the goods in the store and the warehouse. You can set up an automatic order at ten positions: the system will leave an application for replenishing the remnants after reaching this amount.
  3. Calculate a discount — thanks to the POS software, and it is possible to implement a system of discount cards.
  4. Supervise the work of the staff. To start working with the POS, and the employee has to be authorized. To do this, you are given a card and a password.
  5. Perform the functions of an online cash register — accounting and delivery of goods, receiving and giving out money, return, transfer of fiscal data, and receipt printing.
  6. Act as a terminal to accept cashless payment.
  7. Detect goods by barcode — convenient for the cashier so that he does not have to remember all the terminology the company sells;
  8. Weigh the goods.

Checkout POS-system — a “cash register computer” with a wide range of functions, depending on the connected equipment. Sometimes the system is called a point of sale.

What does a POS system consist of?

A POS system is not just a bunch of gadgets connected to the computer. POS systems may be modular or monoblock. All the modular system devices can be positioned so that it is convenient for the cashier to work with it: he does not have to reach for something or look for it. All the devices are enclosed in one body with a monoblock, so you can not change the location.

The location of the modules depends on the type of seating of the cashier. The most popular solution — frontal, when the cashier sits facing the buyer. But sometimes, you can find versions of the cashier sitting sideways and working standing.

Let’s understand the components of POS systems.

POS Сomputer

It is the heart of the whole POS system, as the unit of the home PC. But in contrast to the home computer, this machine is designed to work like a cash register. It has reduced power consumption, compact size, intelligent cooling — all you need to make the POS computer work long and smoothly.

Fan-powered POS computers are less expensive. They blow out hot air and draw in cool air to cool. But the device fails faster because dust and dirt get into the case along with the air.

Fanless solutions are quieter and last longer.

Software

Without POS software, the system is of no use. Cash register software provides the work of all trade processes: receiving money, scanning goods, weighing, returns, etc.

The POS software allows you to do inventory and configure discount programs. The program is also responsible for the system’s security — it updates in time, prevents illegal actions of the cashier, and stores the data.

POS-monitor

The module displays all the information to the cashier. Monitors come in different styles. The most popular are LCD and touch screen. With the latter, you do not need a POS keyboard.

Customer Display

An information output device is directed to the buyer. It displays information about the product, quantity, and price. The customer will see the purchase information and will not distract the employee with unnecessary questions.

POS-keyboard

Each button is designed for specific tasks. Such keyboards, unlike office ones, have a high key life. Each key can withstand about 10-15 million keystrokes. Some keyboards are equipped with magnetic card readers. It is used for discounts on plastic cards or to authorize the cashier.

Check Printer

The printer can print coupons, booklets, receipts, forms, etc. For example, you can print a voucher with a discount on the next purchase along with the check, as Magnit, Lenta, or Pyaterochka do.

Expensive printers allow you to customize the design of the receipt, which is important for cafes, restaurants, or luxury stores.

Fiscal Recorder

This is a device with a fiscal recorder that stores the checks issued and transmits them to the tax office. It is usually integrated with a receipt printer since the seller must provide the customer with a receipt upon purchase.

Barcode Scanner

The scanner is needed to automate commerce by reading information from a barcode. The system will automatically put the price and reduce the number of goods in the inventory by recognizing the interests.

Scanners can be different:

  • contact or photo scanners — are cheap, but they don’t recognize curved or fuzzy barcodes well;
  • Laser — more expensive, they work well with curved and small barcodes. They are sensitive to shocks and drops and have low speed;
  • image or 2D scanners — the only ones that can read barcodes from alcohol. If you plan to trade alcohol, you can’t do without such a scanner. The code on the product must be scanned and sent to the database EGAIS;
  • multiplane — stationary scanners, work as fast as possible but have a high cost and large size.

POS-Terminal

Module for receiving cashless payment. This can be a full-fledged POS-terminal or PIN-pad — a remote keyboard with a card reader. We told more about the terminals in our article.

How to Choose a POS Software

When choosing a POS system, be guided by:

  1. The number of transactions per day — the more of them, the more productive you need the system so that it does not hang up and do not restart;
  2. The need to integrate all the cash registers into one network — clarify this possibility with your supplier;
  3. The need to integrate with accounting or warehousing POS software;
  4. Staff qualification — we recommend looking for a system with a user-friendly interface — this way the staff will quickly learn to use it and make as few mistakes as possible.

When choosing POS software, your type of business is also important.

Retail Stores

Stores need a lot of functions and modules. Do not forget about the magnetic reader; you can run a system of discount plastic cards with it. And a 2D scanner for common and excisable goods, a scale, a cash drawer, a terminal, a customer display, etc. Store systems should provide stable operation throughout the day.

For Restaurants and Cafes

Catering, first of all, pay attention to the POS software. It should meet the requirements — there is a binding order to the table, a waiting list of payment, the customer’s address can be entered into the check if delivery is planned, etc. The software should support various bonus systems: discount cards, points, etc. It is also worth looking for a cash register with protection against water. But the scales or the scanner are not needed.

Can You Build Your POS System?

You can assemble a POS system yourself. There are three ways to do this:

  1. Buy a POS computer and supplement it with the necessary modules. You can connect a monitor, scanner, printer, keyboard, and customer display to the computer. Such a computer is suitable even for alcohol sales because it is equipped with the appropriate POS software.
  2. Use a smart terminal: connect a scanner, PIN-pad, and scales to it. Its performance is enough for small retail outlets — stalls, cafes, islets in shopping malls, etc.
  3. Using an ordinary PC as a basis. But here, there is a complexity with ports for modules, their configuration, and integration. Also, office PCs are not designed to work in continuous mode, so they will not last long.

Summing up the above, we note that the POS systems market is rapidly developing, and bulky devices are gradually being replaced by compact models based on laptops and mobile devices.

Share this article:

Facebook Post LinkedIn Telegram

No related posts.

Search

Translation

CVE WATCHTOWER
🚨

Receive alerts for vulnerabilities being exploited in the wild.

⚡

Get notified instantly when a Proof of Concept (PoC) exploit is published.

🔍

Access critical info on vulnerabilities even when marked as "RESERVED".

🧠

Insights powered by decades of expertise and global intelligence sources.

🎯

Customize alerts with up to 10 keywords for your specific tech stack.

📊

Export the raw CVE database for SIEM integration and reporting.

Upgrade Package

🔴 Live Critical Threats

  • CVE-2026-7374CVSS 9.9
    A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an...
  • CVE-2026-9543CVSS 9.8
    A vulnerability has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the...
  • CVE-2026-42773CVSS 9.3
    Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')...
  • CVE-2026-42774CVSS 9.3
    Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')...
  • CVE-2026-9478CVSS 9.8
    A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the...
  • CVE-2026-9477CVSS 9.8
    A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This issue...
  • CVE-2026-9476CVSS 9.8
    A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the...
  • CVE-2026-9475CVSS 9.8
    A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. This affects the function...
  • CVE-2026-9458CVSS 9.8
    A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is...
  • CVE-2026-9457CVSS 9.8
    A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is...
Powered by CVE WATCHTOWER

Recent Zero-Day Vulnerabilities

  • Exploited in the Wild: Critical OWA Spoofing Flaw (CVE-2026-42897) Hits On-Premises Exchange Servers
  • Exploited in the Wild: Maximum CVSS 10 SD-WAN Flaw (CVE-2026-20182) Grants Admin Control
  • Exploited in the Wild: Critical 9.8 CVSS RCE Hits Canon GUARDIANWALL MailSuite
  • Exploit Code Released: Public PoC Dumps for Windows BitLocker Bypass and SYSTEM Elevation Zero-Days
  • Exploited in the Wild: “Dirty Frag” Linux Vulnerability Grants Instant Root Access
  • Under Active Attack: Ivanti EPMM Zero-Day Exploited in the Wild via Harvested Admin Credentials
Our Websites
  • Penetration Testing Tools
  • The Daily Information Technology
  • Daily CyberSecurity

    • About SecurityOnline.info
    • Advertise with us
    • Announcement
    • Contact
    • Contributor Register
    • Login
    • About SecurityOnline.info
    • Advertise on SecurityOnline.info
    • Contact Us

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works

    • Disclaimer
    • Privacy Policy
    • DMCA NOTICE
    • Linkedin
    • Twitter
    • Facebook
    • Youtube
    Copyright Daily CyberSecurity © All rights reserved.