IT in Retail Business: Technologies Driving Modern Retailing

Walk into any large-format store today and technology is doing far more than ringing up your bill. From the scanner beeping at checkout to the tablet a store associate uses to check stock, Information Technology (IT) has quietly become the backbone of organised retail. For students of retail and visual merchandising, understanding these systems is not optional – it is the operating layer beneath everything a store does, from stocking shelves to greeting a customer at the door.

Point of sale (POS) systems: where the sale actually happens 🔗

A Point of Sale (POS) system is the exact location, physical or virtual, where a retail transaction is completed. It is not just a cash counter; it is a combination of hardware and software working together to record a sale, update inventory, and process payment in one motion. In an Oracle overview of retail POS systems, the point of sale is described as needing to support retailers however they choose to transact – through a traditional register, a portable device, a tablet, or a handheld scanner.

The hardware behind the counter 🔗

A typical POS setup includes several components working together:

Computers and terminals that run the billing software and connect to the store’s central database.
Customer displays that show the running bill so shoppers can verify prices as items are scanned.
Weighing machines, common in grocery and fresh-produce sections, that calculate price by weight automatically.
Electronic cash registers that record cash and card transactions and generate receipts.
Conveyor belts at large-format stores that speed up the movement of goods to the billing counter.
Pole displays and scanners that read barcodes and relay pricing information instantly.

Why POS matters for organised retail 🔗

The real value of a POS system is speed and accuracy. Manually noting down prices and totalling bills by hand is slow and error-prone. A POS system reduces the time a customer spends at checkout, minimises billing mistakes, and gives store managers real-time visibility into what is selling. This is also why retailers are increasingly moving toward cloud-based POS platforms, which remove the burden of manually installing, patching, and upgrading software at every outlet, freeing up store teams to focus on customers rather than system maintenance, as Oracle notes in its retail technology guidance. In India, this shift has accelerated further because POS systems now double up as billing tools for GST compliance and digital payment acceptance, making them central to both operations and taxation.

Barcoding: the silent backbone of inventory control 🔗

Before an item ever reaches the billing counter, it has usually passed through several checkpoints – receiving, stocking, shelving – each of which relies on a barcoding system. Barcodes use the Universal Product Code (UPC), a globally recognised standard maintained by GS1, the international body that governs product identification numbers.

Decoding the 12-digit UPC 🔗

A UPC barcode has two parts: a machine-readable pattern of bars and spaces, and a human-readable 12-digit number printed below it. This number is not random. It typically encodes a manufacturer identification number assigned by GS1, followed by a specific product item number, and ends with a single check digit. According to GS1’s explanation of its identification keys, this final digit is calculated using the preceding numbers through a set algorithm, and its only job is to confirm that the rest of the code was scanned or entered correctly. If even one digit is misread, the check digit calculation will not match, and the system flags an error instead of processing a wrong product.

Advantages and limitations of barcodes 🔗

Barcoding brought major efficiencies to retail: faster data capture at billing, lower operating costs compared to manual entry, fewer pricing errors, and far easier inventory tracking across large product ranges. A retailer stocking thousands of SKUs simply could not manage inventory accurately without this level of automation.

That said, barcodes have real limitations. Each box or unit must be scanned individually – a scanner needs a direct line of sight to the barcode, so items cannot be read in bulk. Barcodes are also read-only. Once printed, the information encoded cannot be updated or changed; a damaged or worn-out barcode label simply cannot be read at all. These constraints are exactly what pushed retailers toward the next major technology: RFID.

RFID: tracking inventory in real time 🔗

Radio Frequency Identification (RFID) uses small semiconductor chips embedded in tags to store and transmit product data wirelessly. Unlike barcodes, RFID tags support both read and write capabilities, meaning the data on a tag can be changed, updated, or locked as an item moves through the supply chain, as explained by GS1 US’s guide to RFID technology.

How RFID differs from barcodes 🔗

The biggest practical difference is that RFID does not need a direct line of sight. A reader can pick up signals from multiple tags simultaneously, without a person having to scan each one by hand. This allows retailers to link the date a product was received directly to the date it was sold, giving far more precise visibility into how long stock has been sitting on a shelf. For perishable goods, this matters enormously – GS1 US research conducted with Auburn University found that RFID can reduce retail out-of-stock situations by as much as 50 percent, directly cutting losses from spoilage and missed sales.

Where RFID pays off 🔗

Retailers using RFID have reported inventory accuracy rising well above 95 percent, compared to far lower accuracy under manual or barcode-only counting methods, according to industry data cited by the GS1 US supply chain resource. Beyond the stockroom, RFID is now reshaping the customer-facing side of retail too. The National Retail Federation notes that RFID helps retailers achieve inventory tracking rates close to 99 percent, which compresses the time needed for cycle counts and directly reduces the frustration of a customer finding an item listed online but missing from the shelf. Apparel retail, in particular, has been an early and heavy adopter of this technology because of how frequently sizes, colours, and styles need to be tracked at the item level. [Image: An RFID tag being scanned near a rack of folded apparel, with a handheld reader in a store associate’s hand]

Digital signage, kiosks and the connected store 🔗

Digital signage refers to television monitors or display screens connected through a centrally managed network, used to show promotions, price updates, wayfinding information, or entertainment content across a store. Because content is managed centrally, a chain of stores can update pricing or campaign messaging across every location at once, without printing and physically replacing signage, an operational advantage highlighted in Verizon Business’s analysis of digital signage in retail.

Kiosks as self-service touchpoints 🔗

Kiosks are standalone electronic structures with a computer and display screen that let customers browse merchandise information, check stock availability, or place orders without waiting for a staff member. In large-format stores or malls, kiosks are frequently used for wayfinding – helping a shopper locate a specific department or product category quickly.

Internet, social media and electronic payments 🔗

Retailers increasingly rely on the internet and social networking platforms for promotion, customer engagement, and even direct selling. Alongside this, electronic payment systems have become central to Indian retail. The shift is dramatic: according to a Press Information Bureau release marking ten years of the Unified Payments Interface (UPI), annual UPI transaction volume grew from around 2 crore transactions in FY 2016-17 to over 24,000 crore transactions in FY 2025-26. This is not a niche trend confined to metro cities – UPI, debit and credit card acceptance, and digital wallets are now standard at billing counters across Indian retail, tightly integrated with POS software so that a sale, its payment, and its inventory update all happen in a single motion.

Bringing it all together 🔗

None of these technologies work in isolation. A POS terminal reads a barcode or RFID tag to identify a product, processes payment through an electronic payment gateway, and updates inventory in real time – all while digital signage nearby might be advertising the very item being purchased. For a retail business, choosing the right mix of these technologies depends on scale, product category, and budget. A neighbourhood apparel store may rely on barcodes and a basic POS setup, while a large supermarket chain handling thousands of SKUs across multiple locations increasingly leans on RFID and cloud-connected systems for accuracy and speed.

What do you think? Which of these technologies – barcoding or RFID – do you think would matter more for a small Indian apparel retailer just starting to organise its inventory? And as digital payments continue to dominate, do you see any role left for cash-only checkout counters in organised retail?

References

1. https://www.oracle.com/in/retail/pos-systems/what-is-retail-pos/
2. https://www.gs1.org/services/check-digit-calculator
3. https://www.supplychain.gs1us.org/rfid
4. https://www.supplychain.gs1us.org/rfid/warehouse-management
5. https://nrf.com/blog/how-rfid-is-helping-transform-the-retail-customer-experience
6. https://www.verizon.com/business/resources/articles/s/how-the-benefits-of-digital-signage-can-help-your-business-grow/
7. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2257087&reg=3&lang=2