POS Hardware Kit: What a Shop Needs at Each Size

Shop owners often buy a full POS kit on the first day: a touch-screen PC, scanner, printer, drawer and a second screen, because that is what the vendor shows. Some of it then sits unused, while the one thing the counter really needed, power backup, was never bought.

Hardware should follow the counter, not the catalogue. This guide lists what a shop needs at each size and in what order to buy it. For a deeper look at receipt printers alone (paper width, connection types, kitchen and A4 printing), read choosing a receipt printer.

The counter device

Everything plugs into one device. You have three choices:

• Android phone. Enough for a small shop with a few dozen bills a day. You already own it, it has its own battery and mobile data, and receipts can go to the customer on WhatsApp instead of paper. The screen is small for long bills.
• Tablet. A good middle step: a bigger screen for a product grid, still battery-powered, easy to mount on a stand. Bluetooth printers pair well with tablets.
• PC or laptop. Best for a busy counter: a full keyboard for fast search and shortcuts, USB ports for a scanner, printer and drawer, and room for a second screen. A laptop carries its own battery through short power cuts; a desktop PC needs a UPS.

Whatever you pick, use a supported, updated browser or the vendor's app, and keep the device for the counter only. A counter PC that is also used for videos and downloads is slower and less safe.

Barcode scanners

Most counter scanners connect by USB and act like a keyboard: they type the code and press Enter, so they need no drivers. The choice is mainly about what they can read:

• 1D (laser or linear) scanners read the printed barcodes on packs and your own labels. They are the cheapest and suit most shops.
• 2D (imager) scanners also read QR codes and barcodes on a phone screen. Pick one if customers will show codes on their phones or if your suppliers use QR codes.
• Wireless or Bluetooth scanners suit heavy items (cement bags, cartons of oil) that cannot be lifted to the counter, and stock counts on the floor. They need charging.

If you have not decided whether you need barcodes at all, read barcode or no barcode first.

Receipt printer and cash drawer

Thermal receipt printers come in 58 mm and 80 mm paper widths. Many use the ESC/P family of commands, which is still widely used in receipt thermal printers, so most POS software can talk to them. Choose 80 mm with USB for a busy counter, 58 mm Bluetooth for a phone or tablet.

A cash drawer usually plugs into the receipt printer with a small cable and opens when a cash bill prints. Buy a drawer only when cash is handled by staff, not only by the owner; then the drawer, a fixed opening float and a daily count work together.

Label printer, scale and customer display

These three are for specific shops:

• Label printer: for garments, shoes, hardware parts, or anything you price and label yourself. Shops that label only now and then can print on A4 sticker sheets with an ordinary printer instead.
• Weighing scale: for kiryana loose goods, meat, sweets, dry fruit and sabzi. A scale that connects to the counter sends the weight into the bill and avoids misreading.
• Customer display: a second screen or a monitor turned towards the customer, showing items and the total. It helps trust at busy counters and makes QR payment easier.

Test before you pay

At the shop or the vendor, connect each item to the device you will actually use. Scan ten of your own products, including a small or shiny pack. Print a receipt with your longest real bill and check the Urdu or English text is readable. Open the drawer from a test sale. Pull the power plug and check the UPS takes over without a restart. Ask how warranty repairs work and how long they take, because a counter without a printer for a week costs more than the printer.

How Nafaa helps

Nafaa runs in the browser on a PC, laptop, tablet or Android phone, and there is a Windows desktop app. You do not need special hardware to start: bills can print through the browser or go out on WhatsApp. Settings, POS hardware sets up a receipt printer over USB, serial or Bluetooth, a cash drawer that opens with a cash bill, a barcode scanner that works as a keyboard, a weighing scale that reads the weight into the bill, and a customer display on a second screen, each with a test button. Each counter keeps its own devices. The counter keeps billing offline when the internet drops. If you want advice before buying, the POS hardware service can recommend a kit for your counter, and offline POS explains how billing continues without internet.